I've worn these shoes for close to 50 hours per week since I have gotten them and they still feel great.  I work in a commercial kitchen and have slipped only once while wearing them (due to fryer oil).  I did have to order a 1/2 size bigger than my Timberland steel toed work boots to get the perfect fit, but still worth the money.  Two tips for these shoes, if you live in a kitchen clean out the tread every few weeks as the pattern is tight and throw out the laces as they are too short and frayed to pieces within the first month.