I thought real hard about an eyepatch, but pretty much every Internet Medical Website said doing so would only make things worse.  Fashion, sadly, must take second place to Grimm Necessitee.<br/><br/>There'll be an opportunity for some XP, yes.  You could handle the addition of Cerulean and Ruby to the cast either way-- as Allies, they'll operate relatively independently; as Demonic Familiars, they'd be present on a regular basis.