Oh they can totally be, first job out of uni in 2012 had diesel f350 super duties as field service vehicles, they made sense for some jobs where it was super remote and rough driving (1000+ km a tank), they've since gone to 2 panel vans and a truck which is way more handy. They're super high off the ground so you need to be careful and most importantly, use your mirrors, these were all tow capable so they had the larger mirrors with the second parabolic mirror, you can effectively minimise blind spots to your sides and behind (I think all car mirrors should be that way, I added them to my sedan's mirrors) but they still turn slow and are heavy. A chunk of my coworkers outright refused to use them, instead opting for rentals, and others were definitely white knuckling it the entire time they used them.