Campy freehub body compatibility
You are correct, all Campy 11 cassettes go on all Campy 10-compatible freehubs.

Listing it as 8-10 compatible is kind of a misnomer because you have to jump through some hoops to make an 8 work on it. It would be better to call it 9-10-11. Here's a page worth bookmarking that I always refer back to to keep it straight.