From what I could gather from the catalog on Kurt's site, this came with a 14-22, which looks about like what you show in your picture. It almost certainly is English threaded. Not quite ready to drop $500 on a titanium Campy 11 speed cassette?
Looks like it uses the splined shimano remover? I agree with BG's assessment... it could be amusing to take it back to him and watch him try to remove the cassette... nah, bad idea.