This is funny and probably in that "may be working as intended" area, but: I've been leveling up Rogue and have Cure cross-classed in from Conjuror to help with healing just in case a fight goes south for me. Imagine my surprise when I see one of the knives floating as I'm casting!
http://i.imgur.com/a2Nl6Ql.jpg
I know casting Cure on any class unsheathes the weapon, so a workaround on graphical for that might be needed. :D