I did rounded corners at the back of my sink to match the radius of the front and I'm happy with how it turned out.

As far as the bin pulls, I don't think it will be a huge issue with your 1/2" overhang. You have inset shaker doors/dwrs which will help. How deep are your pulls?

I just measured my bin pulls (Gilmore from RH) and they're 3/4". If yours are similar, they may not stick out at all beyond the counter. If anything maybe 1/4"? I don't think it will be enough to bug you or will be noticeable to anyone else but you.

The kitchen is looking FAB btw!!!

My counter is rounded to match the radius of the back corners of our farm sink. I don't think I've ever seen a counter w/a farm sink that had square corners in the back.

Good luck!

Absolutely, positively, definitely rounded to follow the contours of the sink!

(just my opinion)

I did a negative reveal of about 1/16." Love, love, love the slightest negative reveal

My sink is also the Shaw's, but I put the blue label on the inside front. I don't get paid by Shaw's to advertise their sink, so I turned it around. There's no royal blue in my kitchen anyway. ;-P (But seriously, I'm not a label type. Just throwing that out there to let you know it is an option, though it determines which side your drain is on.)

Circuspeanut - how funny that I recently saved your and Francy's sink pictures and here you are! What's interesting is that to my eye, yours looks less rounded in the back (very slight radius?) and of course quite rounded in the front. It's a beautiful sink/countertop/kitchen! And I love that yours and mine are both metals so I made a point to hunt yours down. ;) Thanks for responding.

Cupcake - okay - I didn't realize NOT rounding the back corners is so rare! Here's one example I saved (you might have to scroll down a bit but not far - it has the black countertop) but then it's a different sink than Shaws, if memory serves:
http://www.thathomesite.com/forums/load/kitchbath/msg0711422726010.html

Francy - as I was saying above, yours is the other sink I'd saved for reference! Yours is also the kitchen that made me come SO CLOSE to getting soapstone. I just adore it! I like Circuspeanuts sink/counter re. the rounded edges a lot, but I think I'm drawn slightly more - if I'm to round the rear corners - to the front being straight corners as yours does. Probably also because my sink will be sitting pretty much flush, so it makes more sense not to round them in the front.

I had the SAME THOUGHT about the label, but when I compared both ways, I found myself visually drawn to the diamond shape and little splash of color that the label offered. Interesting cause i struggled w/ it for the same reason! I tend to hate labels and feel the company should be paying me for the advertising. The worst is when you don't want your kids wearing labels, e.g. Gap written on their baseball hats. Ewwww! Anyway, I totally get what you're sayin'!

These corners are called inside corners, as opposed to outside corners.
Rounded corners crack less than sharp inside corners.
They cause less cracking to happen that starts somewhere in the corner.
You can see drawings of this in the technical documentation that quartz counter manufacturers publish, to train the technical people at the fabricators. They way to round out the inside corners of the hole cut out to insert a cooktop into, even though the cooktop needs a square (or rectangular) hole with sharp corners. The rounding is only about 1/4" but it is essential to lower the risk of the counter cracking later. Stone is a material that has hidden stress lines in it (not related to the veining) so rounding inside corners is also good but harder to prove with comparable evidence, just anecdotal and experience. HTH.

theresse,
It is my sink you saved with the square corners. I am not too surprised that you aren't finding many examples, because I suspect that a radius corner is easier with most edge treatments. We ended up having to use the squared corners because the edge of our granite was mitered (leathered finish granite, fabricator wasn't comfortable matching the finish unless we used a mitered edge). Maybe look for mitered edge granite pics and you may find more.

Had I been able to choose, I probably would have chosen the rounded corners to more closely match the sink, but on the other hand no one has entered my kitchen and gasped "Egads, they have square corners with a farm sink!" before fainting dead away! At the time I chalked this one up to late-stage fatigue muting my TKO-ness so we could finish the kitchen and live like real people again. But it is not something I notice on a daily basis, so definitely would not have been worth whatever pain/anguish/time/money it would have taken to find a solution/fabricator/miracle to give me rounded corners

The rounded corners also seem they would be a little easier to clean with the positive reveal, not sure if it would matter much with the negative reveal you are planning.

You must be getting close to the finish - can't wait to see your final pictures! Hang in there :D

Whatever you choose for the inside, you are correct in wanting a "straight-ish" edge on the outside IF you are staying true to period (not saying you can't have any edge you want). Looking through Bungalow Kitchens (do you have a copy?), you won't find any outside radius corners on the original kitchens. Of course, nothing is sharp or pointy. I assume this is more a function of the counter materials and cutting tools that were available at the time, rather than a stylistic decision. Metal-edged linoleum counters would provide good examples for you.