In reply to Owen W-G: 6 hours sounds a bit pessimistic to me, I'd estimate we took about 3hrs for the ascent and we weren't climbing particularly fast. Add another half hour for the descent. We had trainers clipped to the back of our harnesses but no pack and no water.
Only a standard rack is required, mostly wires but I think we might have used the odd friend here or there. The traverse is quite short and I only got one bit of gear in at the start.