Anybody not using undercoating?

I paint the underbody with regular paint, either single stage or base/clear depending on what i'm using. You could do it in epoxy if you want to go the extra mile, but I only use undercoat in the wheel wells at the rear and the firewall portion in the front. I find it easier to clean without undercoat. Every year or so, I spray fluid film in the cracks and crevasses and wipe off the excess. Works for me.