Echo what Seth said. For Torre Glacier approaches, a pair of running shoes or approach shoes will get you to the camps then your choice of foot wear, from 3 season mt. boot to full shank ice boot depending on your objective. East side/north side of Fitz same thing, though for some casual climbs like on Guillamet it might be worth just hiking in in the 3 season boots all the way to the base. I would bring all the above boots that Seth mentioned, plus a light boot as well (or replace it with your Cube if you aren't planning on getting on any of the steeper ice routes like the Exocet, SuperCanaleta, Domo Blanco, etc.