What is A09 exactly? Is it supply glass or prepare for delivery?
Dealer fitment isn't very likely as a lot of dealers didn't have the capability. They would have had to outsource it themselves.

What do you say Byron about the side glass in Jennie's?

I say it's odd that these were rarely advertised or pushed as an option. Sales brochures are devoid of any mention and it certainly wasn't optioned before HQ.
Canopy Industries were the main mob in New South Wales and they go way back to FJ Panel Vans. My son has a HJ Van with "curved" side glass and appears to be factory.
They are a lot larger then those shown in Jennie's Sandman.