I have two sets, both are the 29er wider style in matt UD finish 32h. My older set are close to 12 months old, and the newer set are about 5-6 months old, these were made with LB's new process which saves a little bit of weight but are visually identical. The Matt UD finish is very understated, although people still seem to spot they are carbon.
I have had zero problems with them. I built them myself onto Hope Pro2 rims and haven't had to touch them since building. I run them with Bontrager rim strips and they work very well, I don't think I have had any issue fitting tyres, I think I have used most makes of tyre over the past year, they have all inflated without any drama.
There are a few minor scratches on them now, but nothing really noticeable. I managed to rip a tyre sidewall a couple of weeks ago on a fairly fast rocky downhill and rode for a bit with no air in the front tyre, but the rim seemed unmarked afterwards.
I wouldn't hesitate to buy them again. When you price them up remember to allow for import duty, I got billed for it both times, and I think it was about £20, mainly Parcel Forces handling charges...