ORIGINAL: on_your_six
Mixing rudder and aileron is right out of the book by one of the RC flight instruction companies. It is controversial as you can see. If you are going to always fly right side up and never perform any aerobatic maneuvers, you can get away with doing this.
I suggest that a better method would be to just learn to fly and add some rudder manually in the turns... you will see a better turn as you get better with the rudder. Then when you are ready, you will be able to use the rudder to knife edge and fly inverted. The rudder/Aileron mix is so one purpose, that I would recommend just learning to fly properly in the first place. You might even want to try a three channel aircraft with rudder only.. (put control on left stick). There are no rules about this... you are the pilot, you control and ard responsible for anything that happens with your aircraft. Helicopter pilots are pretty good on the rudder stick... as they have to use the rudder.
Amen on chopter pilots and rudder management. I taught myself to fly helicopters and rudder is not optional.