i tour with one whippet (right hand) and use it just as a climbing aid while climbing with or without crampons. never had to arrest as i never fall while descending on skis (put a hand down a time or two some years back tho:nonono2:)
another way i use it is to hold me in place up high in a steep gully (couloir out west/yurp) while kicking slab free that is sitting over an icy/firm bed surface before proceeding to descend.
love thy whippet:)
http://i484.photobucket.com/albums/r...o/IMG_2300.jpg
rog