The antennae and top brake light will get destroyed by ladders. Gas mileage isnt great. The shelves in truck I drove are too small and have a lot of dead space behind/above them. Can only tow 2,000lbs, so forget towing a covered/box trailer. Unless you do very small repair/troubleshooting calls, and are completely organized with them, you cannot fit all your tools in it, let alone things like cases of recessed can lights.
As a vehicle for doing estimates, singular purposes like generator PMs, or light repair work, it's okay, but an older extended cab long bed Ranger, S-10 or the like with a camper shell would be more functional and about $17k cheaper, even with a new paint job and making it 100% road worthy. There is no point in the dual sliding doors as one can reach everything from the rear just kneeling on the bumper.
On the plus side, they are a lot cheaper than the full sized vans, gas mileage is much better, they are more maneuverable and maintenance costs are much lower.