Just been wondering about a concept. Overall, for a typical" climber relative to strength between lungs and legs, do you get more tired if you have more of your weight on your feet or in your pack, i.e., for a 20 mile approach with a full pack before a glacier or ice summit bid requiring crampons, should you:
A. Wear a midweight pair of leather boots (that will accept crampons) the entire trip (2 1/4 lbs on each foot)
B. Wear some light hikers or running shoes (less than 1 lb ea), with the big dogs in your pack, until you have to crampon up?
Which gets you more tired? (assume no blisters either way)