The new camera fairy delivered one of these yesterday. I have been having a bit of a play around, and have hardly scratched the surface, but so far my impressions are as follows:
Size: A fair bit chunkier than the LX3/5/7. Comparable to the Fujifilm X30 it is replacing.
Ergonomics: Much more tactile than the older LX- cameras. I really like the fact that rather than the usual P/A/S/M settings it has a shutter speed dial and an aperture ring with an auto option at the end of each. No more twiddling little buttons on the back to make things happen. Having said that I haven't got the hang of using the control ring for anything but focusing yet.
Lens & Sensor: Holy 5417! This gives my D7000 a run for its money!
Anything up to ISO 1600 is basically noise free. 3200 has some creeping in, 25600 is quite noisy but acceptable in a pinch.
I haven't tried doing long exposures yet (later this evening!), but it is perfectly possible to wander around taking pictures hand held with street lighting.
Here are a handful taken near UCR and in my back garden. Hand held, auto everything idiot mode. No effort made beyond trying to be reasonably steady.
http://www.spectral3d.co.uk/misc/lx100_night/
I expect great things of it when I stick it on the tripod and tell it to do some proper night time exposures.
TL;DR: I'm finding it hard to justify the SLR right now.
[edit] I just got some long exposure shots. Looking good but I have mislaid the USB cable and this laptop doesn't have a card reader so they will need to wait.
Post edited at 21:31