I picked up some of these LB rims in June last year, wide DH ones, so far no issues at all.
They've taken a bashing and still true and in great condition.
A bit harder to lace up, carbon rims take more tension than aluminium and without a meter it can be tricky to get right, I've had to retension a few times, but that's more down to my shite wheelbuilding than rim quality.
I did notice a few minor imperfections in the matte finish (only when the light shines on it a certain way), but kept an eye on it and it seems to be purely cosmetic.
If these do eventually go, I'll probably buy another straight away.
The dry season is here and I can just about ride so I threw my HR2 on yesterday, it comes up 58mm widest point on carcass, 62m widest point on tread blocks.
Im considering getting some of light bicycles new 33mm wide rims laced to hope hubs but the new superstar wheels looks pretty awesome as well, much narrower but free uk trueing and very good crash replacement prices, whilst Im asking a bunch of people with carbon rims is it worth the higher price tag when I can get much nicer hubs laced to high end alu rims for significantly less?