Even in cold parts of the US your hvac or plumber is going to be using something like a transit. Very few trade jobs opt for a truck. They don’t make economic sense and impossible to secure anything in the bed.
Sure landscaping crews can utilize trucks but even then, your mowing operation can get more value from a transit style van if they are only using pus mowers.
Maybe it’s just in my neck of the woods but if you cannot get up or down a hill because a homeowner does not clear their driveway then it’s a no go. Very acceptable boundary.