You know rennie12, I remember this new system called micro 4/3 that came out a few years ago that people laughed at, said it was stupid and would never sell, etc. Guess what? It's been very successful and lives on. Sony came out with their own and people ripped it for having it's own mount system and an odd body. Guess what? It sells really well too.
Fact is that this Pentax is different, it's interesting, and we don't know how it'll perform until we see images in the wild. No one thought an APS-C sensor could possibly do that well years ago and look what the K-5 is doing in terms of noise and dynamic range!