Up until last year I would have said wax, definitely. Waxless skis have IME way too poor a glide phase, and I don't know a single avid skier who would not use wax skis (and XC skiing is BIG in Norway). But modern waxless skis really have changed, and there are types that are a lot closer to a classic wax ski in performance. Soooo... now I want a pair of waxless as well ;-) especially useful for those hard to wax days around melting point. I don't have skate skis, and would have trouble finding enough tracks to skate on. (Skating totally wrecks classic tracks, so please please don't skate unless there's plenty of room.) Skating a little from time to time with classic skis is quite doable, though.
Winter riding is much less about badassery and much more about bundle-uppery. - malkin
1995 Kona Cinder Cone commuterFrankenbike/Selle Italia SLR Lady Gel Flow
2008 white Nakamura Summit Custom mtb/Terry Falcon X
2000 Schwinn Fastback Comp road bike/Specialized Jett