The vast majority of compacts have similar amounts of shutter lag.
There is one that I know of that does not - the Panasonic lx5. It's not "jeans pocketable", but it's still "could possibly cram it in a jeans pocket would just be really uncomfortable to walk around like that" sized.
Imaging resource's timing gave it's shutter lag timing almost the same as an entry level dslr - and more importantly I tried it out myself at my local camera store next to a Canon t2i and could not tell the difference in focus speed (unlike the s95, g12, and Nikon p7000 where I could tell the difference in focus speed). The lx5 has similar low light performance to the s100 (though not the s100's new noise reduction, which sounds like it would be a plus for you).
Good to know! I've been debating between the S100 and the LX5 for quite some time, going back and forth many times. Shutter lag (not just auto focus) is the big thing for me but I haven't been able to do a side by side comparison of the cameras (or even find either of them seperately in a local store...). The ONE thing I wish the LX5 had was the front control ring that I could set to aperture. That's one design the S95/S100 really did right. It feels like going back to my Contax RTS and controlling aperture on the lens, and shutter speed on the dial... Oh well, I'm sure I can get used to the LX5's control, it seems pretty easy to switch between the two controls on that rear dial.