Have owned this camera bundle for 5 months now and shot about 2000 frames in varying conditions. The attraction was a light product, little more in size and load than a small compact, but with the facilities of through-the-lens. It wasn't long before I purchased the add-on viewfinder as well, because using the screen in bright light was impractical, especially if you wanted to do any more than point and shoot. As a result, this forces a choice between flash and viewfinder which is inconvenient.
Like most cameras it takes a while to master the control of shutter speed and aperture, and I have tended to default to the 'Auto' setting, which rather defeats the point of the TTL. The manual control of shutter and aperture is not stunningly intuitive and can be quite fiddly, although the manual focus is clear and straight forward.
The lens bundle is great. The versatile combination is just right for most requirements and whilst I thought about the extension tube option, there hasn't been a need yet. The telephoto 40-150mm is a pretty solid performer, but with a small lightweight camera body, and little grip, you have to watch for camera shake. I am using a unipod (or a handy wall) more frequently than expected.
I also took the advice of a previous reviewer and purchased a spare battery!
The picture quality of the four thirds solution compares admirably with the Canon 7D we also use, but in Photoshop you can still tell the difference of course!
Overall, much better than a top of the range compact, but not a replacement for a decent TTL, which I suppose it what one would expect really!