Always difficult to design right, the first time. Always an iteration needed. The idea is that when you want to immobilize / perch the hand shower, ones places its universal butt end into a -- holder clip designed as part of the steel support around the sink rim, or into a -- option 2.) removable extension holder normally stored in the cubbyhole with the hand shower. I'm assuming you can picture a hand-shower thingie, in a kitchen. Made of a typical kitchen pulldown tip. And, also, that you can picture a handshower holder inside the sink, under the counter, in an undermount sink. The hand shower / faucet is then invisible, when stored away. Its hose is too. To get the hose to come from somewhere that make sense, picture a 5" x 24" opening cut out of the counter, along the back wall. This gives you room to reach into garbage and storage below. Cabinets can be pulled forward (e.g. 3") and trimmed down to leave space behind. In that space (behind cabinet drawers) are containers for refuse / garbage / compost, and for the handshower and hose, and for some food (e.g. onions+garlic, root vegetables, bread box / bakery) See "1/6 size" and "1/4 size" restaurant containers (stainless steel, polysulfonate, polycarbonate) 6" deep or deeper. The hose is connected to flex lines behind the counter. In the rim around the sink there is a gap (horizontal slot) greater than 0.75"h 24"w in the steel support (custom built). Under the counter. This gap is where the handles are for IHW, filtered water, and regular tap water. And soap.

I did a sensor faucet in our hall bath and I love it. It doesn't go off spontaneously or not work on demand. If I need it to stay on, say for cleaning, I stick something in front of the sensor like a toothbrush or small bottle or whatever is in the drawer. The model we chose also allows you to change the water temperature from the faucet - for hot you wave your hand over the sensor on the left and for cold the one on the right. Of course, this is only useful if the water is going to stay on long enough to get warm. We chose the kind that plugs into an outlet vs the kind that has a battery, which means that we had to create an outlet under the sink. Since we had to move other wiring anyway, this wasn't an issue. I can't tell you how happy I've been with this faucet.

Just saw this and am wondering if y'all got the Jacklo faucets and if you have pics to share? Sorry if you already shared them but I can never find pics/figure out how to properly use the search functions here. I still love mine. The only pain is the part where if the water's running and you want to remove the hose from the neck in order to spray down the sides of the sink for example, you have to quickly turn off the faucet to take it off lest you get sprayed, then turn it back on, or else you have to be cautious and deliberate in the act of removing it while the water's flowing. Not a deal-breaker but that's my only complaint. It makes quite a statement and one quick swipe with the sponge and it polishes up beautifully. The fact that it's not chrome OR nickel is HUGE because it looks much warmer than chrome but cleans much better than nickel. ;) How are you liking yours? Oh and here's a pic I took last night when we were making bread, that has the faucet in the background when it's very, very dirty (haven't wiped it down in ages, I'm embarrassed to admit)! Ok I'm just realizing it's not the clearest pic but I think it makes clear how it generally still looks great - especially considering how little I care for it (blush).

You have presented a 500 pound question that has no single answer so I'll give you three 166.66 pound answers. First,you need a deck mount hole in sink,I don't see one. Secound,if you are talking about a vegetable sprayer,they are available with provisions for plumbing directly into suppy tubes and coming through wall same as facuet. Third,if your plumber doesn't know everything I just told you,you have the wrong plumber. The best set up is a commercial facuet with overhead sprayer like used on pre-rinse table before dishes go into automatic washer in restraunts.