Great idea. Except one thing about using nipple clamps in this scenario...is it gives him a way out, providing he's able to deal with the somewhat brief pain of the clamps coming off his nipples. For that reason, I think I would prefer the ratcheting ropes going to his tied balls instead. I think nipples would be better in another sense, because it provides more motivation not to pull them off, but once that's done it's done. With tied balls, that option is taken away from him. Know what I mean?