That makes sense because of how it was scripted to work. You see, the fists given to you when you have the Fang of Vukodlak aren't registered as real weapons, so I had to remove them entirely when walking into Elysium, otherwise you could attack people in Elysium. So when you leave an Elysium area, they are restored to you but won't be your "readied" weapon.
Best thing to do is to hotkey your fists of Vukodlak so you can ready them quickly.