I don't have any real numbers but I think it's safe to say everwears last longer than randonneurs. I've never owned an everwear but I have a friend with one that skids much more than me and his outlasted my rando with the same skid patches. I'm sure however, 2 randonneurs will outlast 1 everwear which is about the price they go for. Another reason I like randonneurs is what I mentioned earlier, it feels like an eraser. I've heard it referred to as a mars plastic and I think that's spot on. Smooth skid without being too hard (skid for days) or too sticky (grips/jerks mid skid)