Here is a set of baked maps applied to the mesh as an in-workshop material, still looks 'flat' as it's only the base for what will be the proper texture, basic flat colouration is on just as an example.
Texturing process examples through to final result, nearly everything bar the bakes, text and logos are handpainted. Intended goal of a muted realistic-yet-retrofuturistic finish met. Will upload in the next few days, unless a reader strongly feels a fix or edit is necessary.