In reply to captain paranoia:
> Okay, so it is 'a thing' then.
Yup, it is. I rigged some rubbercord things that I attached to my slippers and then tightened around my ankles. And those slippers are sized for comfort. But if it is a long route, and basking in the sun, my eons ago frostbitten toes will start to cause problems. Easy fix is indeed to just pull the heel out from the slipper like Robert does. And same thing when going down.
> I think I'd be more concerned about not having a shoe on my foot whilst abbing, even if still attached to my trousers.
Yeah, that is a concern... but then again less on the abseils and more on the way up I'd say.