The G10, nor any digicam for that matter, just don't have the reflexes (no pun intended) for street shooting. Not that it can't be done, but the combination of relatively slow AF, slowish lenses, and poor viewfinders makes them less satisfactory than they should be.
GX200? I only suggest because of the hyperfocal focusing mode that I love on my GR1.
Another vote for the Ricoh here. Particularly as it has a clever[optional] electronic viewfinder which allows 'waist' level shooting, fast lens too and a '24'mm w/a lens.
I'm very surprised you have not considered it alongside the other quality compacts you've recently reviewed. A bit flawed but some very clever design aspects to camera. More of a pocketable camera than the G10 too. I had a play with a G10 the other day, very, very nice, but a little too big for my requitrements for a P+S. Now if it had a bigger sensor.....
Shame Canon gave up on the slightly smaller S60/S70 range as the S80 was a big improvement on the design, bar the droping of RAW. An S90 with 8MP + RAW and good 400+ ISOs would be nice.