aeajr,
Using the buddy cord has allowed me to let my buddy get much closer to the ground and still be able to save his butt, without passing the TX back and forth.
In the beginning it was a real trainer for me also, being able to get someone out of a jam real close to the ground. I always wanted to let them make some mistakes, and see if they could get out of it.
I think it is a great training tool IMHO.