... I am not used to the skirt being printed in multiple layers... In fact I can't think of any reason for doing this... unless I guess it makes it easier to remove? I've hear a taller skirt can help protect your first layer against drafts and/or hold in heat around the part... but those sound pret...
Not being able to do this sabotages much of the value of being able to specify different processes per model. Such a pain to have to delete/reload/re-orient, re-position, re-select objects for all the processes...