If you're going to buy a deep snow ski and a carving ski, buy a ~108 mm pair and a ~70 mm pair; don't buy two compromise skis. Buy one compromise ski if you like, but getting an 82 mm and a 96 mm ski would be like switching between all-weather and all-season tire. No, if you want switch between summer and winter rubber you buy Studded Nokian Hakkapelita (R3 if studs are not allowed where you live or if you don't see ice often enough to justify the studs) and Michelin Pilots or similar.
Totally agree Francois, I wouldn't get much versatility out of that. I'm considering either a 70-75mm frontside ski with the Rustler 9 and Enforcer 94, or something like the Deacon 84 or Enforcer 99 paired with the Enforcer 104 Free. I just need to decide if Enforcer 94 is going to be wide enough, or if the 104 Free is going to be necessary.