Never been a fan of side panel windows, it takes the "Panel" away from Panel Van. That said, "some" look awesome with tinted bubbles.
Time after time it is proven windowless versions are more desirable, more valuable and sell faster.

Here's the thing, if your Van has black outs around the sills and windows it will look sweet with black bubbles and to a lesser extent tinted flat glass.
Against a solid bright colour even more so.

I have had both and sold on windowed versions to replace with windowless. Most given the choice will go windowless for their toy. If it's an everyday driver you would probably like side glass for easier driveability.

Also remember Holden aways promoted the Sandman in the sales brochure as windowless.

Even the small V-Series flip windows actually work very well and it even surprised me how useful they are.