Its a strange response from Luthier, multi GPU's being supported does not mean that there will be a toggle switch in setup options for dual video cards, I guess he's saying that yes 2/3 cards will work but the game as not been coded to take advantage of them, but then again Il2 was the same but you could force SLI (nvidia) through the driver settings. Why we cannot get a straight answer on this though is anyone's guess.