If someone is taking care of my bags and gear but having only needed to carry lunch and a light back pack, I would buy something like this
https://www.backcountry.com/oboz-sawtooth-x-mid-waterproof-boot-womens?skid=OBZG04Q-CHA-S100
The one thing I discovered about humping in the steep high country is not just walking or having strong legs, its all lungs. Its like riding a miss and out event on the track. No need for pure sprinting but lots of get up and go until your lungs explodes.