I got a quick question concerning Theodore and my application for him.

Is he allowed to carry the Persona Compendium with him? Not in the sense of using it as a storage for personae, but for fights.

Being an attendant of the Velvet Room he has access to every personae his guest ever summoned, yet when fighting himself he is only using nine of them. Also they don't emerge from the see of his soul like in the case of the protagonist's, he is summoning them directly from the compendium. So them being part of the compendium actually.