I guess I don't understand what the advantage is to "transmapped" hair for models. It is no advantage to the user, who must try to figure out what a scene will look like without the hair until rendering. Makes it much harder to see the outcome to have to render, then change, then render again, then . . . and so on. Is there some really worth-while advantage in creating a hair object to do it transmapped? It's quite a nuisance to the user.