i have news from a easter egg at shearpoint in skyrim. this weapon u can not equip, only your partner can use it and/or pick up. so heres what you do fast travel to shearpoint if discovered now when you get there dont attack the giants what you do is get on top of the wall were the giant bowl is. then look to the right and you'll see a club now command your partner to pick up and he equips the weapon also its one of the powerful weapons at 65 at low level.
so thats all i have for today have fun.