I can't speak to longevity, because I've only worn these a few times so far. These are perfect edging shoes. Great for those tiny nubs, edges and pockets. I haven't used them in cracks yet, but they seem like they'r probably do pretty well. The rubber is as sticky as the Five Ten rubber is rumored to be. The only complaint I have is the fit. It's "interesting" The toe box seems like it's designed for a more loose fit, not a lot of room for your toes to curl up, maybe I have longer toes than usual? But to keep the heel from being super baggy you have to size these so that your toes curl a bit, not a lot, but some and it feels kind of wrong. All that aside, it's something I'll deal with because it's not that bad. I would buy these shoes again in a minute. I wear a size 11.5 street shoe and I went with an 11 in this shoe for the fit that I'm happy with.