fwiw...
With a double, you get a small amount of toe up/toe down as that part of the joint is not fused, so it is not difficult to go down, you just angle some more when descending. A triple would take that from you.
However, if the lower joint is fused (which provides the lateral movement), sidehilling is much more difficult as only one leg has the lateral movement for leaning to the uphill side
strap a stick to you leg and try it...:)
without lateral ankle movement, the pressure is put upon the knee and the Rockies will prove that point to a guy
