The breastcollar only really “touches” the saddle over fences. It stays in place on the flat, but I never flat around in it - if I’m flatting, I’m in a dressage saddle, if I’m jumping, I need the collar. He just moves so much over a jump, the saddle doesn’t really have a chance.
I’ll look into the different version! I think a friend might have one I can borrow.