Originally Posted by skiNEwhere
I have a pair of marker dukes on Soul 7's that I've used mostly to skin up resorts. A very heavy, but quite burly binding. One thing you need to keep in mind though is that you'll lose the lateral stiffness and rigidity you'd see with a normal binding. It took me a while to notice this, but when my boot is in the dukes, there is a small amount of play left and right. If you have someone stand on your ski with a regular binding vs an AT binding, you'd see what I mean. I don't think this is because of the boot/binding interface, but rather a side effect of the design, where the heel of the binding slides into the mounting plate on the ski when transitioning from AT to alpine. This, combined with the fact they're Soul 7's makes it pretty hard to carve and makes bumps a little more difficult as well. AT bindings really aren't designed for performance on the hardpack, so keep that in mind if they will be mounted on skis that will be your daily driver.
That's my take anyways.
I have a pair of 188cm Soul 7s mounted with Guardian 13 MNC bindings. I haven't noticed the problems that skiNEwhere has in terms of the bindings. To me, the Guardians ski almost exactly like my Griffons or FKS. Granted, I haven't had nearly as many days on the Guardians as I have the others, but from what I've seen they're almost identical. They are really heavy though, and I wouldn't want to do more
I think a lot of the problems on hardpack are due to the ski itself. The Soul 7 is great on anything remotely soft, but it's definitely not a charger on hardpack or variable conditions. I'm actually looking at getting a Cochise or similar ski next year so that I have a mid-100mm charger ski for days when it's too choppy or hard for the Soul 7s.