This is quite an amusing thread.
I am a pro i suppose, my cameras help earn me money, I do charge (most the time) for what I do.
My photos can be readily seen
here
Are they "pro" quality? Who knows, I think they are ok, and my customers seem happy.
I use a K7 and K5, both of which I considered to be pretty good cameras, well made, solid, functional, with some problems of course. But who does not have problems ?
Personally I can't see the K-1 being a disappointment (except perhaps that I will most likely be able to afford one thanks to our terrible exchange rate)
Pentax make honest cameras. If it says it will shoot 8 frames per second, that's what it does, not with some proviso of "only with the optional grip" or some other excuse.
I do hope they don't have mirror flop issues, and I do hope they have given the AF a boost (the K5 I use is terrible, especially once light levels start to drop, I would love to try a K3)
Will it be a camera that can earn you money / be a pleasure to use / look cool ?
Well if the K7 & K5 can, why on earth not.
I'm excited, even if I can't get one just yet