I currently have the co-pilot set up on a Telemaster .40 and a Futaba T6XAS radio. It will work with flaperons, but you can only put one aileron on it. Makes roll recovery a little slower, but it does work. I initially set it up on Rudder and elevator, but couldn't get the plane to quit fishtailing with the rudder. Looked like it was "swimming" through the sky. So I experimented with the one aileron thing, and it works fine.
RC Pat is exactly right about the landings. Cross-wind landings are a breeze with the co-pilot.
We've discussed this thing in depth at the field, and we concluded that the best thing was to learn on a buddy box with an instructor first. Then, it may help you with landings, etc. I can turn mine on and off using the gear channel. It is a terrific little device though, and works perfectly-IF it is properly hooked up. One guy at our field put one in his plane and didn't check it out before flying. Elevator was reversed, and he couldn't turn his off. Made for an interesting landing. He took it out and gave it away right on the spot.
Good Luck
Randy