I have completed A Daedra's Best Friend several times before but never have I kept The Rueful Axe. Always I've kept my promise with Barbas and denied Clavicus Vile's deal. The Axe def feels much slower than most, if not all, other Battle Axes. So people, can someone tell me if there is/ are any good reason(s) to keep The Rueful Axe? I want to think there is some reason to keep the Axe, other than to simply do something different.

Rueful Axe isn't an Oblivion Walker artifact.