When you say aider only, are you referring to the "stirrups"? Just link to the thread you have on what you're referring to and I'll take another look.AGREED!
You should try Aider only though. Especially with two Ropeman. I wouldn't recommend it at all if I didn't feel totally safe doing it. It just requires some technique and patience. And if you are rigged for Rappel descent, even better