For me it's purely utilitarian. My tow rig needs to carry all my tools to do just about anything. Torches, big hand tools...EVERYTHING. I keep going back and forth on what works the best. To me looks are always secondary to function. If it does the job, it's pretty.
I have two trucks I am outfitting for two specific jobs. I feel like the tow rig/Daily driver would benefit most from the service body but it also has to be able to get me into the back country to hunt and guide. I'm feeling like the other truck needs to get converted to Dually to pull heavy stuff around locally.