I did treadmill tempo this am, 3k in 11:50 is about as fast as I can right now. Not that I've ever been capable of much more than that. may go look at used ski gear this evening with the boys - mostly for new 75mm boots, but maybe I'll find a bargain on backcountry skis with my name on them.
See my long post on the EMPO ski-o. I don't think skis gave me any particular advantage today. Maybe on the easier first half, but once I got into steeper terrain and stream crossings that advantage disappeared.