Same issues out here in farm and ranch country. Its rare we see a DRW truck with feeder bed doing daily out in the muddy fields/pastures work. Those dual don't work the best for various reasons already mentioned.
Much of my experience with the DRW vs SRW comes from pulling heavy trailers in and out of muddy construction worksites. We kept a F250 4wd heavy service pack with mud terrain tires on our worksite. The loaded trailer was dropped somewhere near by then the F250 was used to pony the heavy trailer into (and out) the work site and dropped where it was needed.
We made the mistake of leaving a DRW/empty GN trailer sitting on site in the mud (mud packed duals). Temps went to mid teens with 30 mph winds that nite. Next day the truck/trailer was due back at our loading yard for a reload. Mud packed between the duals froze and made a very uncomfortable 25 mile ride till tire flex allowed all the frozen mud to sling out of the duals.
OFF ROAD ?? Covers all types of terrain from axle deep mud to sugar sand or narrow trails to fire roads or a gravel/dirt county road.