Except maybe with how stupid you are. Bring two weapons with you. If you're working on swords you can pick up stuff from the ground. If you're working on maces, you can run down to the Lich room and grab a discarded wand off the floor. Loot what you can, but don't get pissy if you can't get anything.
Thieves come here to work on stealing so alot of times the Bone Knights are dry.
Don't sweat it. Lately, people have been running around the Bone Knight room like a bunch of retards. Why they do this, I don't know. Maybe they think they're hardcore or something. Thirty people running around the room equals thirty missed chances for a spawn.