I wouldn't go as far as to say it's the correct tool for the job, definitely not the best tool for the job, but the idea is with enough time and money put in, it will be an adequate tool for the job and more importantly I enjoy using it more than a 2015 Blandmobile.When you will walk out to your car at 10oclock at night in a rainstorm and drive it 2 hours one way and back with out flinching,.. I'll concede you have the correct tool for the job.
Back to the thread, I still think for your example of a tri-five business 'truck', making an example of what you can actually do with a tri-five is better advertising than sticking panels on a Dakota. Surely with the modern chassis and engine options, a competent shop could make a tri-five viable for advertising and fair weather parts delivery type duty. While it certainly shows some creativity, I don't know that I'd hire the builder of the 'Bel-Kota' to design and build a car for me, would you?