I'm not sure that most people will agree that they look friendly. Not even the judge that touched the rear leg and got away qyickly avoiding a conflict.
I was talking with an AKC judge at a IABC show. He had Black Russian Terrier. He mentioned that the Caucasian is the only dog that they aren't supposed to touch when judging. I would have thought the Fila would not allow strangers to touch them.