Just got the above camera as a replacement for my Canon 7D (which got damaged beyond economic repair).
This is a really impressive little camera and can do pretty much anything a DSLR can do (and some things they can't).
The weak points are lack of an optical viewfinder - the EVF is good, and certainly very usable, but I could see this may be a deal breaker for some. The other problem, particularly for aviation photographers, is that continuous focus is slower and less reliable than you might expect from a DSLR. Single shot, on the other hand, is lightning fast.
Image quality is the big surprise - though the lowest ISO is 200, image quality easily beats the 7D at 100 ISO. I thought this was perhaps me looking at the results through 'new owners' eyes, but recently released DX0 ratings would seem to back this impression. It uses a Sony sensor, so perhaps not such a surprise.
Anyway, if one can live with the obvious continuous focus limitation, this little camera packs quite a punch, and has a lot to offer. It certainly raises the m43 format to the point where it is a viable alternative to crop sensor cameras.