The traverse back to climber's left after exiting the couloir to the right is not emphasized enough in the guides. We continued up and joined the North Face route. We found the climbing 5.7/5.8 on occasionally loose rock. Expect to spend as much time on the descent as on the climb. We down-climbed and rappelled the B-S with two ropes.
With E Sandbo & L Rasmussen. See Trip Report.