sadly for you, there is no "specialized" stat between blm and smn, since they deal the same kind of damage. both need int to deal damage, vit, determination and spell speed. I don't think it will work wonder making gear with int-blm and int-smn because of fashion.
Special stat like "augment skill" have yet to be seen, but nothing prevent them to make the same equip with double effect like "on blm: this, on smn: that"
