Welcome, Phil. I've had a Lumix G1 for a bit over a year (I was an "early adapter") and have subsequently permitted my darkroom to founder with lack of use.
I started out shooting JPEGs, but have subsequently forced myself to shoot RAW only and process them in SilkyPix, which I've found to be pretty easy to use, once I discovered a good method, then output to TIFF and a final resize and/or B/W conversion in PS for output to JPEG.
I use the G1 in A or P modes only, and have mainly used the 20-1.7 Lumix lens, with a bit of Minolta MD manually adapted lenses for good measure.
Hope to see more images soon.
~Joe