Durability: These things walk on rocks, scree, ice, parking lots. Go do that with your alpine boots. I skied these exclusively from December to February, then got back into alpine boots at the resort; continued to use the Adrenalins out of bounds and backcountry thrugh June. The only durability issue is that the screws that keep the tounge hold-down in place can back out and get lost. I recommend you just take them out and apply blue locktite when you get them. That is standard on the boots now anyway I think. I am about due for a replacement vibram sole, but the DIN alpine sole is unused. The boots, buckles and liner are in great condition. These boots will drive a full size alpine ski and impose a minimum performance penalty. From the sounds of it, they are perfect for what you have in mind. I still wear them at the resort when I expect to do side country with a walk out. My preference for exclusive resort skiing, is an alpine boot, binding and ski. For the backcountry AT boot, AT binding and lightweight ski with 85-95 mm waist.
For next year, I will put the Mantras in full Alpine service with look P12 bindings for general use, put the Rossi Axial 140TI on the Salomon AK Rocket Lab Swallowtails for powder, use the Volkl 6 stars on hard conditions, and pick up a light weight ski for use with the AT bindings. I'm thinking pretty seriously about these
. I am retiring a set of Dynastar 4X4 Powertracs. I sure wish I had an Epic-worthy quiver, but that's it.