I think they're great, but I kind of get the impression that the bigger/heavier you are the less you like them. And obviously if you like freeride, they're a no no.
One advantage if you're a geometry freak like me is that they're just about the only fork that really works that you can switch from 80mm travel to 63mm if you want to make the fork a retro length and keep the steering of a retro frame as sharp as it was designed for.
[having said that I think you could also get the RC38 Airforce in 63mm BITD]