I don't mind the idea, but don't forget that we're the characters here that we're playing are meant to be Joe Average Survivor; if Athlete or Stunt Man were introduced as professions then I'd say have that ability set with those career paths specifically. Also it's not something that you'd be able to do with carrying much past a bottle of water and some snacks, let alone a fully laden rucksack, and I'm not leaving my rucksack full of scavenged goods behind