Hum, not quite sure, but at the end it cannot be upgraded for the aura. Even though it was true, every new primal starting with levi always came along with a sword + shield, and especially since some patch ago it now loot together at once, would be cool to add the missing piece of the pair for Ifrit, Garuda, Titan and Mog so that you can use the sword/shield with the 2nd piece assorted.