Sure, it doesn't fit everyone.
Belts of skulls are certainly not the best protection, but they can have a psychological effect on the wearer's enemies, frightening or enraging them. If an Enemy Group has a Line of Sight on the Skull Belt carrier, two dice are rolled in the Enemy Behavior check, and the Heroes choose the result they prefer.
Ah, he'll come with you if.... there's a good fight awaiting. This is gonna hurt!
Be Bad, Be Tough, Be Orc!