In doing my GAS research for the GF670/Bessa III, I came across Jonathan Canlas who shoots with the GF670. He shoots a lot of color and I find his work quite amazing (read...his work is adding to my GAS for this camera).
His blog doesn't have a search function, but if you use advanced search on Google, it'll bring up all of his posts with GF670 in them.
Here's a link to the search
and links to selected images are below.