Sick roof crack. Sit start on finger locks and the arête, pull on more wicked finger locks and the arête to some thin hands at the lip. Or climb the roof as a compression line without using the crack at about the same grade, I think.
Trying it the kneebar way felt nice and I can pull off from sitting into the k eebar so it felt the same. Classically I don't look smooth on the top but I truly was.