[quote]Q: Do Rooks carry all their weapons around all the time?
A: A rook's weapon is basically a materialised version of their spirit. It can be summoned and dismissed at any given time. However for this reason you also can't use two weapons at once. Only exception to this rule are Knights because parts of their summon's bodies may count as weapons.[/quote]

^
It's one of those weird part of the rule though.