I have a few pairs that are a few years old, and will continue to buy more, especially now that they recently opened a store in our area!
I'd say they're probably twice as tough as Carhardt jeans, maybe even more, and far more comfortable. I've been told by a number of folks that there waranteed forever, but we'll see about that. They certainly are more expensive than Carhardts, but they're worth it IMO..........