i have a set and also the real coefficient rr I suppose these are inspired by.
these are definitely sturdy and much easier to route internally than the rr. the tops are ok for resting forearms on and holding conventionally. the mount was accurate (garmin) and well placed. there’s not a,second mount on the bottom though (rr has this) so it’s not feasible to run with a light really, or a camera which are major downsides in my mind.
i wrapped mine to the hoods and put antislip tape on top.