Yeah, heard that wigs take a lot of managing. I know people who spend hours combing through their wig to make sure there were no tangles in it...

Hm, I'm feeling that either they will disappear again in order to go back and report their findings to the shinigami court or whatever system they have there, or they'd stick around so they can discuss how to proceed from there on with Ciel and Sebastian...though probably not very likely.