There's no silver bullet to any of this, everyone has their own way of doing things. It's whatever works for them.
Our trucks, as many know, are setup with the main tools on board. All the hand tools, wheelbarrows, blower, chains, binders, etc. They all have SNG bodies. We have two hardscape bodies which we set down on a jobsite when we start and pickup when we are done. They have all our hardscape tools in them. Why the job bodies? I have no tires, axles, registration, maintenance, inspections, etc. Plus no one can steal them.
The hand tools stay on the trucks. if its raining one morning, and we have to call an audible at 7 a.m. that truck is ready to go to another side to do something for the day.
Once the job body is set down, we put the mason bodies on the trucks that night when they come back to the shop. From there, we can haul 8 tons of stone, sand, skid of pavers, etc. They all have fold down sides. One truck per crew, one set of tools.
Equipment is moved on our trailers, OR, and this is the big plus if we have to get a machine back to the shop and we don't have a trailer on site, we can put it in the SNG body and bring it back to the shop. Which tends to be really nice if something needs fixed all of a sudden.
It works for us and is extremely efficient. But there are many other concepts that work too.