We have two sets of the non boost 2016 650b carbon Traverse ELs with 24/28 straight pull spokes and 30mm internal width. The first set came on Abigales S Works Enduro. She buckled the front wheel at a PMBA Enduro race practice and we couldnt find anyone to pull it true so she raced with it buckled. Matt at 18 Bikes sorted it out for us and a different set of carbon wheels were fitted which she raced all season on with no problems, her sister now has that bike and the wheels are still running true. When she got the S Works 29er Enduro for this years competing the wheels were removed and hung on the garage wall straight away.
I have her original Roval wheels fitted to a Stumpjumper and they have been fine since Matt sorted them for me however I dont ride anything like Abigale does.
The second set of Rovals on Kevins S Works Stumpjumper are identical to the first ones. Two days into our Alps trip he buckled the front wheel and couldnt get it sorted, we had a spare WTB/Hope wheel which he used for the rest of the trip, managed to ding that, and the Roval has been rebuilt again by Matt.
Both back wheels have taken a battering and are still OK.
If I were to buy new, in my opinion, Rovals wouldnt be my first choice, lack of spokes, quickness to repair and get spares been the main reasons.
We are running a few different sets of wide carbon wheels which we havent had any problems with.