I learned to fly RC with A two channel plane and radio, A little HOB Cub. Right away I learned rudder. Teaching my students at one point I had A little three channel Cub that was A great teacher, wish I still had it.
I teach landings using elevator, throttle and rudder only, that teaches both rudder and throttle management and the students never know what they are learning so they don't freeze up when they start learning rudder, they have been using it for A long time.