so what of the enhancements that come from the blade bound arch-type? can you stack more bonuses on an already enhanced by you class weapon? and would you be able to add something like spell-storing to the intelligent magus weapon from blade bound?
ie; I'm level 13 that gives me +4 from blade bound could I give it spell storing when it was only a +1 weapon then at 13 it looks like +4 spell-spell storing
sorry went a little beyond the scope of the original intent of the op's question. (maybe I should have made a new topic)
; Kaigen