I've had the Canon G10 for all of 3 days now and I've been having great fun with it. It is definitely not without its limitations, but it is a capable camera and I feel good with my decision of going with the G10 over the Lumix LX3.
The biggest limitation of the camera, for me, is the ISO. I find that anything over 200 ISO in color is mostly unusable. 400 in BW is even pushing it. I also wish that the lens was a little wider with a 2.0 max. aperture, but in the end that wasn't an absolute deal breaker.
It's greatest strengths are in usability. The knobs and rear thumb-wheel make for relatively quick setting changes without too much menu digging. In its native state it suffers from the same slowish focus/lock/shoot sluggishness, BUT there are ways to speed things up.
In order to make my Canon G10 more Leica-like in speed, I set the Review to OFF so it doesn't show me the photo I just took right after I take it (that alone shaves off 2 seconds). I also set the focus manually to approximate distances (employing zone focusing / hyper-focus for the Leica-philes). Since the sensor is small it has a greater depth of field and if you get your subjects within a foot you'll be fine.
Another setting you should turn off is MF Safety. This keeps the camera from engaging auto focus to check your manual focus. I also set the shooting to multiple continuous frames so in low light I can take a sequence and improve my chances of a shot in focus.
I set all these parameters and save it under the Custom Funciton 1, so when I turn the knob into C1 I'll be in street-shooter mode (aka HCB mode - for the Magnum geeks).
I'll be posting more thoughts and samples as the weeks go on.
Still Snowing in the Methow Valley
15 hours ago