In reply to eire:
> Your friend sounds pretty fast Jon! I'd say he slept well after that outing!
Simon was soloing. It was the day after our ascent. The rock was completely dry and we wore rock shoes from the base of the route, right onto the summit. I'd imagine he did the same. Our approach (ie doing it in a day from the hut) was so that we could climb with a tiny 20L sac each, just big enough for a pair of boots, crampons and a waterproof. It paid off as we got back to Argentière that same evening. I hate climbing with a heavy sac and have never liked bivvying.