Yeah, characters aren't skirmishers anymore, though they become skirmishers if they join a unit of skirmishers (p.77) -- unless there's a rule I'm missing somewhere.
*edit. Dur, under forests (p.119) -- lone characters get stubborn. What was throwing me was me thinking you were calling them skirmishers. Carry on!
I really need to make a set of notes cross referencing things. Pain in the ass looking in multiple spots for things (especially in the middle of a game).