In reply to BnB:
That method has its potential weaknesses too
at the end of a long weekend in snowdonia about 7 years ago, my brother and I thought we’d have an easy day and do the eastern terrace scramble on cloggy. In the mist and rain, it felt a bit more serious than the grade 1 scramble it was billed as, and to say I only enjoyed it in retrospect is understating things by a fair amount...
so trudging back to the car, soaked and chastened, I felt in my pocket for my car keys. Nothing there. The zip was still closed... but there was a small hole in the fabric that the keys had worked their way through.
So the day had taken an even worse turn. Now my brother would have to drive me to Yorkshire to pick up the spare keys, and back to snowdonia, then all the way to London for work the next day. What a miserable end to the trip.
Then... deliverance. The trousers had two layers of material, and there, at ankle level, trapped between the outer and inner layers, were the keys. A sigh of relief, we finished the soggy trudge, and I went off to bed.
I don’t think I’ve climbed in snowdonia since...