To me one is a requirement, but are two side doors a real advantage if the tank is mounted a couple of feet back from the bulkhead?
Yes and no. It is certainly easilier to access anything on the off side behind the bulkhead in our business.
In the industry they see it as a waste of space as you loose loading area. So while this probably won't apply to our business it will reduce the van's resale value, unless you find someone who specifically wants 2 side loading doors.
The smaller car derived vans, ie Berlingo and even Dispatch can still sell to 2 rear sliding door advantage, but the bigger Transit type vans can't. (When selling Dispatches we got several requests to disable the off side sliding door, making it a fixed panel. This was so deliveries could be stacked up on that side. Unloading a van from the 'wrong' door in the traffic flow also went against some company's health and safety assessments.
In all the time I worked in commercial van sales, I never sold a Citroen Relay with the twin side sliding doors factory option.
