I actually think it may be bugged. I'm one of the few users of this weapon, and I'm finding that when I get hit in a melee fight, my weapon will often get sheathed. It was happening over and over, to the point where I thought it was my mouse/keyboard. I mapped and remapped the weapon equip buttons. I switched to a longsword, and the problem went away. Switched back to the scythe, and it returned. Today I went into duels and sure enough, it would only happen when using that weapon. Can you look into it?