Batbelt. A common name for the belts first worn by batman and robin. They have multiple pockets that seem to hold their every need.
Mine has evolved over the years. Mostly it is just a lot of small pouches strung on my belt. Sometimes I use a stiff web belt instead of my "pants" belt.
The big advantages are flexability and mobility. I can change the pouches to suit my needs and I can get to the contents easily.
I have 3 levels of carry.
Bat Belt, minimal stuff, can do most activities when wearing it. easy to get to stuff. Get kidded a lot, but people are getting used to seeing others wear bat-belts.
Fishing vest: Lots of stuff, easy to get at when walking or driving. Inhibits movement somewhat in difficult areas. Looks weird, but usually there is no one else around. Hotter than bat-belt.
Back Pack: I use a tactical back pack. It differs from a hiking back pack in that it is narrower, allowing easy movement, has no frame, can't carry as much, and sticks out from my back farther than a hiking backpack, if heavy can be a balance problem. Most of the time use the pack if I am traveling someplace with little expectation of using gear while walking/traveling. When I get someplace, I set the pack at my feet and it becomes a very useful storage/retreival system. To get at stuff while walking, I have to remove the pack and set it down. Not a good idea in many environments as small critters like to hitch a ride and use you for lunch.
Different situations require different solutions.
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...........From Nomad.........Been "on the road" since '97