We haven't ever borrowed anything that I can remember, but we've certainly shared what we have...or at least offered to do so.

The one thing that I think about sometimes is being well off the trail on rough terrain...and worrying about a bad sprain/broken ankle. Has anyone ever carried one of those inflatable casts? Just a thought.

On the other hand, we would make the injured person comfortable, and then the healthy one would make a hike for help...the true test of a marriage!