If we really are Devil Arms...and I know some of those powers listed match some I know personally...we should. A Devil Arm at its most basic is a soul with demonic power that's been transformed into or bound to a weapon.

I'm a longsword, for example, and I can normally turn into one and back at will. Aoi's a pretty distinctive set, and should have the power of a pair of twin scimitars.

Of course, that raises the question of what happened to the souls inside the weapons. Aoi's are incessant chatterboxes.