Just thinking out loud, but if a polished hood was cleaned with ONR wouldn't it bead and sheet from the polymers?
This is what I always wonder about coatings. How do you know the coating is still there, or if polymers from a wash product or a QD are just causing the paint to bead?
If one were to wash their car weekly with ONR and wipe it down after with OID wouldn't it bead all the time? I know this is the case with some products, like Sonax Brilliant Shine Instant Detailer. That stuff beads better than most waxes and lasts quite a while.
In my experience, ONR doesn't bead well at all. The polymers in it aren't really meant to provide any protection.