I've had these shoes for about 6 months now and they've been great. No break-in time needed! I've worn them up a wet and rocky creek bed with NO slipping and my feet remained totally dry. I've even been wearing them on the slippery ice this winter. After a 12-mile hike, my feet felt great and I could have kept on going! Like another reviewer mentioned when going down an incline, my toes become a little squished and the laces loosen a bit, but nothing that tightening them up can't fix. I did need to buy a 1/2 size larger than what I normally wear. Overall, a great shoe and I am very satisfied with my purchase.