Originally Posted by upallnight
Well....that is sort of narrow thinking. I have 5 different AT setups, and I don't live where you live.
Needing big, burly boots to steer a big ski is a bit of a crutch. It makes things easier, but some big skis can be driven just fine with AT boots. If someone wants to throw Dynafits instead of Fritschis on a pair of fat skis (105-120mm waist), why not?
Perhaps they do not jump cliffs. Perhaps they want to save 3 pounds of weight (a weight savings is definitely good: going from 12 pounds to 9 is just as good as going from 9 to 6...but your point is taken that one could go from 12 to 6 by saving weight on the skis, too).
However, if someone wants to maximize their fun on a deep-snow tour, perhaps they are willing to add 3 pounds by touring with a 120mm-waist ski instead of the 75...but they negate the increase by using Dynafits. That is perfectly acceptable.
Maybe the guy just likes the better skinning stride offered by Dynafits?
Yes, Dynafits are incredible for many reasons, and they excel on the lightest-of-light setups (I have one)...but I also have a pair on a 99mm waist ski, and I'm thinking of putting them on a 120mm waist ski.
I, too, have Freerides on skis from 80mm to 138mm.
One can mix-and-match the components to best serve their purpose. If it's a long day/long tour and you just want to get as far away as possible, go with ultra light gear.
If you are riding lifts and just skiing some off-piste terrain, by all means go with the heavy/burly stuff.
For everything else in between, use a combination that suits you.
Even alpine boots + trekkers have their place.