Well, I managed to paint the resin vehicles to a gaming level pretty quickly. The resin material seems to have taken Gesso (which I use to prime) and paint fairly well.
Here is the AMX-10RC from its left, rear, and right. I used the same camouflage pattern as the Sagaies and the APCs. The vehicle is a very solid piece of resin, quite a bit heavier than plastic kits. I hope the paint job will hold up well against bumps and bruises. The vehicle is in 20mm (1/76) scale, but looks fine enough compared to the 1/72 plastic kits, and is suitably intimidating.
Here are the VBLs. I painted the windows a dark blue colour to represent the glass, since this is what I've seen other people do for solid resin vehicles. The effect seems fine enough.
Here's a close-up of one of the VBLs. The kit is quite functional, probably with less detail than a plastic kit would have, but it's good enough for me and builds up a lot faster. Hopefully it will also turn out to be more durable in gaming.
Overall, this is has been a very positive experience for me. I'll definitely be getting more resin vehicles for gaming.