Chances are a small adjustment would be needed; a tweak on the high/low limit, maybe the B-screw, and possibly the cable tension. All that should only take a few minutes in the work stand. The bigger pain will be adjusting/shimming the rotors and calipers, although it's still not that bad. If you care to set it up, you can add shims to one set to make that transition easier. Personally I haven't tried shimming any rotors yet, but it seems to be pretty commonplace.
Mudville Stomper wrote:November just had a blog post on shims...
So in a perfect world, with identical hubs, minimal adjustment will be needed.
Thanks for the knowledge. I appreciate it.
I have two wheelsets for one of my bikes with identical hubs and they require no adjustment.
I don't have any experience with swapping between XD and SRAM/Shimano drivers, although in theory 11-speed spacing is all the same across campy/sram/shimano. (I'm actually running a Campy RD with a SRAM chain on a Shimano cassette, fwiw).