Impressions? Yeah - fastest camera I've yet tried, in all classes. I first thought AF didn't work because it was already focused before I even pressed the button. That blog entry about it being slow and menus confusing - I call bullsh!t. Yes, there are no external controlls, but the menu is very clean and simple. And I don't know where they came with that "slow" comment, must have had a broken camera, because like I said, mine's one of the fastest cameras I've tried (and I've tried them all). It can also be virtually silent, since you can choose electronic or mechanical shutter.
I've played with V1 as well, but decided to take J1 to the streets because I don't really need an EVF on this particular cam and prefer the compact model.
High ISO is very usable (the SP above is at 3200).
But again, what impressions do you want? It is NOT a camera for us RFF types, so no, I won't be doing anything serious with it. As a P&S it's fantastic.
I'd somewhat agree that the only negative thing about this camera (considering the INTENDED USE) is the current price, but those are all MSRPs, I haven't seen MSRP remain for long after launch, so the prices will come down quickly.
And by the way, whoever said "smart camera for stupid people"? Genious! That's exactly what it is!