Many, including myself, have done the same kind of thing with way bigger cameras, though as a teenager all I owned was a little early Pentax H1 35mm. Galen at least tried med format, but claimed it didn't fit his personal style, and it probably didn't. But Sella puts us all to shame, and did pioneering exploration, climbing, and photography in the Alps, Karakorum, Alaska Range, central Africa with a huge plate camera. It's all relative. Today a lot of people complain that anything bigger than a cell phone is a terrible burden to carry. I got out with the 8x10 yesterday, and actually ran into a pro hoping to buy one, asking me advice, planning for a year-long travel project. He mainly has 4X5 Sinar studio experience, so already knows certain basics; but outdoor logistics with even bigger gear and expense adds a whole new layer to the learning curve.
When he wasn't traveling, Galen would run up Marin Ave uphill from here, a very straight steep street which my backpacking sidekick also keeps in shape with. I drove up it yesterday. My deformed feet can't handle hard pavement or sidewalks, especially back downhill. Until I was around my mid-60's, I'd add a five-gallon jerry can of water to my 8x10 pack, giving me a cumulative weight of around 90 lbs, and hike up the highest and steepest hills I can find around here, or on weekends near my mountain property, where that kind of challenge takes on a whole different scale. The nice thing about doing that is that it builds up your knees going uphill, then at the top you dump the water, potentially over yourself on a hot day; and that spares some of the wear and tear on the knees and feet going back downhill. Wish I could still do that, but I can't.