Great topic. I carried a 100 foot, 3/8" Goldline in my SAR pack for years as standard equipment for years. Came in handy countless times in many ways.

In the early seventies I worked in Canyon de Chelly (heaven on earth for a rock climbing archaeologist). I soon learned to always carry rope. My minimum was 60' of 9mm, which invariable accompanied me always, even when only planning to drive up the canyon. That was in addition to whatever cordage also came along for the task at hand. Doesn't hurt to throw in some slings, and a biner or two.

I once posted on a gun form that a length of quality climbing rope would be more generally useful as EDC than a firearm. Let's just say that was a novel concept for many.....