I sense a BPGD bio coming. :)

But I don't see any problem with the Ignatine "gun-kata" having archery forms. After all, ancient martial arts (at least the wuxia-flavored types) have archery styles, and the "gun-kata" did not evolve form nothing.

Or "Clint" ran into Jackie Chan, who invented his archery style on a rainy afternoon when he was forced to stop an entire clan of Big Fire ninja with nothing more than a bamboo stick, a piece of twine, and some wooden dowels. :)