I agree with the OP, anything that can help you move efficiently and safely from one point to another or alternately being able to take routes that others normally could not would be of great advantage.
Age and physical conditions do apply, until a few years ago I could hump through the mountains with a backpack on pretty much jogging the whole way. I
had fun learning to cross creeks on 14" water pipes and eventually built my confidence enough to do it in the winter. Learning to climb trees could
put you out of danger (or sight) and also allow you to get at fruit and firemaking materials.
I had always thought it would be great if you could safely put a hammock high up in a tree where no one would bother to even look for you.
Awareness and tracking skills are just as important as survival skills though few know how to practice either with any efficiency. Learn if you can,
there are books on the subject. In fact John Wiseman's SAS survival guide has a decent section on tracking. Don't ignore this skill.