Spruce: what's a van? a pickup with a roof and more space.
Most of my subs work out of vans as well. For a multitude of reasons, I preferred a truck. With the bed box the way I had it set up allowed for materials and debris to be hauled without hampering getting to the tools. The three biggest reasons for a truck are that it keeps the noise, dirt, and stink out of the cab, unlike a van. Oh, and resale value, the truck was worth a whole lot more when I sold it than a van would have been. In the end, it is personal preference.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!