Charles told Fanatic climbing It adds 3 difficult moves to the obvious start and it takes me 2 sessions for climbing it with this new start addition. It's classical roof climbing, the only particular thing is a kneebar. It's a 10 moves problem before finishing your effort in a blue circuit boulder.
One of Charles' creations, the direct version of Le pied à coulisse, given ~8B+ but thought by many to be a lot harder to climb with shoes, was repeated recently by Nalle Hukkataival, who confirmed the grade.
To my question "Barefoot?", he replied "Bare hands!", so apparently there was a way.