So I guess Using Wardrobe Wizard to convert to prop, retaining the morphs... which I think it does(?) ...combined with Joe's second option, might do it?

Will have to do that for all the figure hair I currently have, if so...

Also, I'm pretty sure I've got some hr2 hair that came with mat poses. I think mat poses do work with props too.. or can do?

EDIT: Yeah, the AprilYSH hr2 hairs I have, have both fit pose files and mat pose files...