I switched keyboards and went to the new Mac keyboard. I use it to play WoW and I like the feel quite a bit. My fingers don't get as tired as they used too. The only downfall is that every now and then, I tend to drift my fingers a little bit more on to other keys when I'm not paying attention than I did with my old keyboard. I think in another week, it'll feel very normal. The keyboard just is such a radical change/feel for a normal desktop keyboard. I Love it though.
I'd give it a 7 or 8/10 for gaming, 9 or 10/10 for word processing etc. My wrists would get really achy from long gaming, now I dont get that pain. To me that's reason enough to stay with it.
Cheers!