As usual, I look at the symbolism in everything. I’ve shown you over and over that all of this symbolism being put in your face ultimately goes back to the Cronides and the Prometheans. The Prometheans generally reverse the symbols of the Cronides. The hand signals are no exception to this rule. Look at those who gave you the two finger blessing:
Zeus
Bronze hand used in the worship of Sabazios (British Museum). Roman 1st-2nd century CE. Hands decorated with religious symbols were designed to stand in sanctuaries or, like this one, were attached to poles for processional use
Sabazios is Dionysus-Osiris whereas Jupiter Sabazios is Zeus
Links:
http://en.wikipedia.org/wiki/Sign_of_the_cross