Ok, I will try and make this question as short as possible..

I have a
4pls t-fhss tx
3pl fhss tx
r304sb t-fhss rx
r2004gf fhss rx.

The r304sb Is in my short course truck.
The r2004gf is in my 8th buggy.

Both will be mainly controlled by my 4pls. But if I have a instance where I want to run both at the same time(providing I had friends ). Could I bind the 3pl to the r2004gf for the friend to drive then rebind to the 4pl and keep trims, and other settings on the 4pl?