In reply to Dark-Cloud:
The GX7 with the f1.7 20mm lens* is just about pocketable - if you have large pockets. Not used the GM5, but it looks like a very different type of camera to the GX7. Depends how much you like poking a touch-screen rather than proper buttons in order to change settings. I would think the GM1/GM5 are more like compacts with changeable lenses, and the GX7 like a small SLR.
*which is infinitely better than the stock 14-45