In reply to Alan Bates:
Like Jon I did this a long time ago but we bivied at the col. Climbed the ridge to the summit and then back down to bivi and then back to valley ( I think the glacier descent off the back is now too dangerous). We took a rope but soloed the whole thing - however it is a longish ridge and many would choose to rope up and down at least some of it. It is a beautiful area.