I just got one for me for my trip to Mexico... wanted something a little less conspicuous than a giant DSLR.
I haven't done any serious shooting yet, but my initial experience is "Wow!, Its crazy fast."
I'll post some photos when I get back.
The one thing that few of the reviews touch on, but bears mentioning is what a joy this camera is to shoot. In manual mode, you have full control of aperture & shutter speed with the rocker & fly wheel (I love the rocker switch, but it seems backwards that you press down to increase the aperture... I guess most people think of lowering the F-Stop number, but I'll bet the design team had a debate about it). Would I like an exposure knob? Yes. Of course I would. Would I like an ISO button? You betcha, but the camera menu is surprisingly intuitive to operate, so I just leave it in the ISO menu and I'm good. It switches super fast, and because it comes up in the view finder, I don't even have to take my eye away from the camera.
Performance is pretty 'meh' in low light, but so are my kit lenses on any SLR. I look forward to slapping a faster lens on the adapter and seeing what happens. I've got a D800 on order, so I figure that will replace the D90 as our go-to for low light shooting. I'm also super jazzed about having a compact that can bounce flash.
For me, this camera replaces my D40 as my walk around camera, and based on my initial experience, it beats it in resolution, ergonomics, low light performance, autofocus performance, viewfinder coverage, and it shares a battery w/ the D90, which is a bigger deal to me than it sounds like. I'll let you folks know how it performs in the field.