H.Wayne & Tommy, Jr servo's and Futaba servos actually rotate in opposite directions. Personally I have never used this method to do the dual elevator thing but an old friend of mine did it on his U-can-do 60 and the plane flies just fine.

I use Hitec servo's myself and have the programmer. I just set up my servos on the programmer and then use a Y connector or else use the Ailevator function in the 9C.