If the lens mount is going to be sticking out, why not just make the body a little thicker to encompass the mount, thereby making the body more hold able?
I'm very attracted to this camera. Love a small camera, and I love the aesthetics. But I don't think I quite understand it over the RX100. Controls here might be a touch better, but not a lot better. The RX100 starts at f/1.8, which is very handy. The RX100 has amazingly clean ISO for it's sensor size, and I don't think the Panny 43 sensor can make up the difference (i.e. RX100 at f/1.8 is probably better than the GM1 at f/3.5, given the almost 2 stops difference in ISO). It'd be interesting to see it with the PL15/1.7, but I do wonder, as others have noted, why do the m43 makers refuse to make a fixed lens/fast aperture m43 compact? That would be quite compelling.