Originally Posted by
Koyote
Sorry, my brain short-circuited there...You can use six-bolt rotors in CL hubs, but NOT vice-versa. Sorry for that.
This. Centerlock hubs can run either, where 6 bolt hubs can only run 6 bolt rotors.
That said, I'm not sure why anyone would run an adapter on a new build CL hub. There are lots of options for both type, so I don't really think this would be a deciding factor in selecting the type/brand of hubs.