Billy, I am running the same transmitter as you. If you turned on Flapperon in the advanced menu, and then set the elev to flap mixing, then they are tied into you elevator. To answer your earlier question, yes I have saved an aircraft in the past when the elevator servo stripped, I turned on flapperons and used throttle to save the aircraft. This is only reasong that I have them programmed into my aircraft. I don't use them for harriers, elevators, etc. Its personal preference.
Kevin