If it ejects in the same direction as the old 742, there should be no problem (providing your arm is generally below the forearm).
Mine should be arriving in about a month, and if you haven't found out by then, I'll let you know.
BTW, on one of the sites I visit they're calling the 750's "Klingons". Someone commented that the new forearm looks like a (censored word) forehead. :roll: :twisted: