I don't know about you. I’m getting older and find the weight of my tool belts to be problematic, especially if I’m climbing all day, which I have been. I have occi bags on military style web wear. Have a lot of lighter stuff from homedepot. Heat is also a problem for me. Wearing a heavy rig with a padded belt and suspenders isn’t fun in the summer. My tee shirt becomes completely soaked and limits arm movement.
Where I am now is wearing the lightest, cheapest canvas belt & pouch, no suspenders. I don’t put much in there, usually just fasteners and a few small tools. I have a titanium hammer which really helps. The nail guns, or impact drivers are the bigger problems. I have a swing hook belt clip that I use for carrying bulky tools. That’s been my favorite method for carrying power tools.
Occidental leather bags are nice. I have them, but super heavy. Probably the heaviest choice you can make. They have a newer model called "Oxy lights", which are light weight with some leather trim. They are probably better. I feel like "occidental" is a "let them eat cake" answer. Its a default here without really understanding the details and realities.
For anyone who thinks I need to eat less or work out more (or whine less):
1) go to hell
2) my scaffolding isn’t a ladder where your legs do the work. It’s a straight aluminum tube frame with rungs maybe 18” apart. I climb it with my arms. Climb to the top, then have to lift 4x8 sheets of plywood up. I often have one hand on the work, one hand on the nail gun or whatever, and no hand to steady myself. My scaffold planks are pretty good but they flex.

(pic is a couple years old- note I screwed the scaffolding to the wall, which was a game changer).
At the end of the day my feet hurt from climbing round tubes and steadying my body. If I’ve worn my belt all day, I find uneven belt loading (typically on my right side) hurts my lower back. If I take a week off from work or have a 4 day weekend, I actually feel ok by the time I get back to the office. But a 2 day weekend could be tough for me both days.