Just wanted to add to the issue of the ski/walk mec. I landed a bit hard the other day, and smashed the plastic shell next to the ski/walk switch. I got a tear that started at the bottom of the cuff and continued a few cm past the switch. So it doesn't seem to me that the plastic is strong enough either. Got a new pair from BD with the improved mec so we'll see if it holds up. Kind of sceary though, could easily break both ankles.