Does anyone have any feedback on this rack mounted and ridden on a MTB frame with carbon seatstays? I haven't found any contraindication, neither from the user nor from the manufacturer (unlike Topeak for its similar model), but it still doesn't inspire confidence to radially tighten a carbon tube. My bike has fairly wide non-flexible seatstays though (Santa Cruz Tallboy). But it would be in the idea to do trail-rando, like swissmobile alpine routes, without lighting up the descent either. It's hard to get an idea. And it doesn't make you want to crack your rear triangle when you try it with a bowl...