Hi Spark. I agree with the other pros here in saying that's it's not common, but not offensive either. I get it. I think if it were Me, the idea of sucking one (even condom covered) that I knew had been in someone's ass would be a no go, but it's rare anyone balks.

I would say that I would probably insist on using My own harness. It fits just the way I like it. Dick are disposable, but a good harness is hard to find. ;-)