I just spent 15 minutes with it today, in between the One Light Workshop conducted by Zack Arias here in sunny (and cold Dubai).
The X100 feels pretty solid. Has a good weight to it, and fits really nicely in hand. The top plate is aluminium and looks really classy. Knobs have a satisfying click to them, and it's unlikely that anyone's going to accidentally bump a knob from one setting to another.
The hybrid viewfinder is an interesting piece of work. In optical mode, it seems to have an electronic overlay showing exposure compensation, aperture and shutter speed. For the life of me, I could not find an exposure metering scale on the display, but given my limited time with it, I think I will need to pop by early tomorrow morning to check it out some more.
The 23mm lens does produce a 35mm equivalent field of view, but I'm a little disappointed 460,000 pixel density on with the 2.8" viewfinder. For that price, I'd have hoped for something in the 900,000 pixel range, but I guess that wasn't in the cards. The lens was fast enough to produce some decent images indoors at ISO400, and I will try to get some RAWs and JPGs to share tomorrow. Being a fairly short lens and having rather beefy fingers, I did find it a little comfortable adjusting aperture since the aperture ring was pretty close to the body, but the shape of the ing allowed me an easy grip after some time with it.
I have to say that I'm reasonably impressed with this camera (as was Zack, who was even more surprised that this only cost US$1200, considering the features, size, image quality and build quality), and while I'm no longer as besotted by the fantasy of having one in hand, i can certainly see myself plonking down some money when it is available here next month.
Oddly enough, I was told that there was a version with an interchangeable lens as well. That remains to be seen...