I'm working on a lycanthrope(well, kuknanthrope) concept that also has the ability to voluntarily shapeshift into a swan. As far as I can tell, there doesn't seem to be any hard and fast reason why a character couldn't maintain a mind-only shift and a body-only shift at the same time, but the interactions would probably be interesting, approaching Hexenswan territory. Any thoughts, on a general as well as a specific level?