Originally Posted by
Lambdafish
Didn't SE say they wouldn't ever give us villain outfits because it would be confusing? I definately remember them saying it about garlean armour, so ascian robes would fall under that. I don't think they would be able to justify the WoL wearing that attire, and they especially would not be able to justify the WoL using the ascians identifying glyph (magic the WoL most certainly would never possess) as a firework.
Sorry OP, no matter how you spin it, it won't, and shouldn't happen outside of maybe a quest reward from the absolute final battle against the ascians/zodiark, with lore justification as to why we can now possess these robes.