In reply to Alan Breck:
Depends on what gear you have & what you want to do. I had a similar dilemma a few years back. I have been X-country ski-ing (Back country, classic & skate) & was hitting a brick wall so to speak with ski-touring in Scotland. What did it for me was trying to over come the camber of the skis (Fisher E99 MTN crown) to do hop telemarks down a slope (hills behind Glenmore lodge). I got brassed off!!!!!
So I hired some "heavyweight" telemark kit from Mtn Spirit & tried various set-ups. That was the first good winter 2009/2010. I bought my own set-up for the winter of 2010-11 & have never looked back!!!
Pros; I can piste bash red runs either parallel or tele, I can climb steeper slopes with the skins & harscheisen, ski better off piste, & tackle the mountains.
Cons; flats & gentle uphill's are much slower due to gear weight & flexibility compared to a X-country set up! But due to X-country back ground I can still outpace my mates on their ski-mtn set ups! Experience & technique still count!
My set-up is 7TM power tour STI bindings, Trab Stelvio Freeride skis (I think), Scarpa T2eco boots, Black Diamond nylon skins, clothing & rucsac & everything else from my general climbing/walking kits. Although I did get special knee high log johns so not to bulk up the boots, & long lorpen ski-socks, very good set-up!