In reply to Tom Ripley Mountain Guide:
> I don't see the difference it makes, travelling you can wrap your screws, with their caps on, in a towel or whatever. Just make sure you pack your screws in your bag carefully when out on the hill.
But you climb a few weekends a winter so I see your point. But some of us climb once or twice a week through the winter, and when you do that the roll up bags are great - simple, fast to use, no little caps to loose in the snow, and protects the threads when in the bag - very important. But like you I wouldn't use one if I had a two hour hike to get to the ice, I'd just pack carefully, but when its two minutes they're great!