I have this from the link above. I have since seen them at Home Depot in my area as well (SF Bay area). Yes, the soap reservoir is fairly small but it hasn't been a huge problem or inconvenience for us. I'm sure this would be greatly affected by your individual soap usage, however. It is NOT compatible with the Never MT. Because the soap reservoir is on top of the air gap portion there is no way I can think of to get the hose from a Never MT up to the soap dispensing part.

I haven't looked at the combos, but I don't see any reason why it wouldn't work just as well with the combo -- it is basically a replacement of the down tube or uptake that will go all the way to the bottom of a bottle of soap sitting at the bottom of your cabinet instead of a 5 or 6 inch bottle under the counter. It also has a backflow valve to prevent the soap from running back down that tube into the bottle or you would have to pump a long time. It just drops the bottle down -- the air gap, I beleive, works around that.

Ditto to Breezygirl's point #2. I am linking a thread on why you don't need an air gap, and/or if your Code requires one, what to do about that (i.e. substitute the soap dispenser after the inspector leaves). Also, are you sure you want a side spray? A faucet with a built-in spray is better IMHO. With a side spray, you have to hold down the handle to keep it on spray, you will get less water pressure than you would with a faucet and built-in spray, and side sprays tend to break faster than faucets with built in spray. Also, it would be nice to have one less hole in your countertop, and one less hole to clean around. So, if you take my advice, you are left with 3 holes: the faucet (if it's a single-hole faucet), the air switch and the soap dispenser. I would put the soap dispenser on the left and the air switch on the right. Don't put the soap dispenser too far in the corner - there are people on this forum who have done that, and don't like it. I have my soap dispenser 8.5" (measuring on-center) from my single-hole faucet. Here is a link that might be useful: Thread about Air Gaps

We have 4 holes-but they weren't pre-cut, were done to our liking as we remodeled just very recently..we're also in CA. I wanted to say that I hated it..for the first three days, and then I got used to it and forgot to hate it..and that you, with your view out of the window, will forget to hate it in a day:) But then I went and measured the space between the holes, just in case, and it's between 7 to 8 inches everywhere except for the disposal button and the air gap-these two are much closer but they're also sitting so low, unlike the faucet (we have some Kohler too, sorry don't remember the model, but can look it up) and the soap dispenser. So unfortunately yes...I imagine it might get very cluttered look, especially on the soap dispenser side, and it might irritate you when you use it since it'll be so close. I'd forego the soap dispenser thing(actually I regretted we put in ours, even though initially it was my own initiative lol), and just use a pretty container for soap.