I've been wearing these for 6 years, and I see no sign of wear except in the soles which look like they might go another 3-4 years. I hike everyday besides my hunting. Plus I just wear them all the time they're so comfortable.
No breakin was needed. I put them on for the first time and went for a hike. Warm and completely water proof. I recommend them highly.
http://www.cabelas.com/product/Footw...3Bcat104841180