Well they’re not just gonna discard the extra tube.

You want a genital tube, you’re gonna have to be happy with a butthole tube, or just one really long genital tube.

worse positioning

Yeah, it wouldn’t be as steep - therefore less fun

I mean the ape dong slide and the Kong bunghole slide are both pretty bad, but if you enter through the mouth (or bobs) are they worse?

Someone build a scale model so we can learn