Doug,
How much actual shooting have you done with the G3? I ask because it's clear you are more familiar with cameras that have a substantially different feel. Unless you have already done so, consider going on several long shoots, where you photograph in your 'typical' way. Just focus on the photography and see how it goes.
In my brief time with the G3 I was surprised at how effective the ergonomics are un such a small beast. But it is different, and an in-depth session or two, where you forget about any decision you have to make, might answer your questions.
How much actual shooting have you done with the G3? I ask because it's clear you are more familiar with cameras that have a substantially different feel. Unless you have already done so, consider going on several long shoots, where you photograph in your 'typical' way. Just focus on the photography and see how it goes.
In my brief time with the G3 I was surprised at how effective the ergonomics are un such a small beast. But it is different, and an in-depth session or two, where you forget about any decision you have to make, might answer your questions.