My Impacts were badly made tbh, low quality materials and just not very durable. They fell apart after one winter, like my Ba5ics did, the constant wetness just seemed to destroy them in half a dozen different ways.
But my Freeriders have surprised me, they’ve already lasted twice as long as either of those and they’re still in good shape. Don’t know if that’s just specific to that model or if they’ve upped their game across the board.
(OTOH if I’d been wearing Impacts this august I don’t think I’d have broken my toe in the alps!)
I can’t comment much on longevity but my Sombrios feel like a much more quality item, and after 6 months they’re still looking like new. But they’re hard to find now in sensible sizes, a real shame, they’re easily the best riding shoes I’ve had.