In reply to torquil:
> [...]
>
> Give the guy a break, he's just lead most of a WI5 so is obviously competent. Coming close to dying (would you want to fall on screws in that ice!) and then trying to scratch up a smooth ice-less slab is going to make anyone look pretty sketchy!
Totally agree, and the rock below is probably polished to a fine sheen by all that running water so there's probably nothing even close to decent to get purchase on.