I recall seeing hubs that were compatible with both campagnolo and sram/shimano somewhere and my search skills are sub par. I know i can switch freehub bodies and im wondering simply because with a bike im building i was thinking of going custom wheels with campy parts, but dont want to drop a bunch of dough on wheels for a group i may not like? also the ability to switch with my other bikes.

Edco

3T

Fulcrum
Campagnolo
any wheel with the Novatec 4 in 1 hub.

Most of them.

Off the top of my head, the only ones you CAN'T switch is actual Shimano branded hubs and wheels.