I am glad there is some interest in this little beauty.
I've considered a RX100 but the GM1 make more sense as I can put it in my m43 kit and it has a lot more versatility.
I have the 14mm, 20mm and 45mm. Pair the GM with 45mm and add my Ricoh GR as suggested above and I have a great minimal travel kit.
IF only someone would bring out a good IQ 10mm prime for m43. Puleeze!
Another use I have for this is it will be lightweight hardware on any astronomical telescope for the odd astro photo.
Here's one of those camera comparisons for the heck -
Compact Camera Meter