I can tell you what I've been told by the guy who made the work.
The trims have been covered by:
3 layers of painting
the "wood"
3 layers of lacquer
1 layer of "wax"
He told me that it's resistant, and if it should happens to scratch, I should simply use some car polish to "repair" the damage.
From my (very small, indeed) experience, while I was "re-building" up the car it happened to have some minor scratches that went easily away with a wet microfiber cloth.
I think that I've taken out some wax, in this way, but the scratch was repaired.
Anyhow some other guys made this work some time ago and they're still satisfied with the result.
The person that made the work seemed to me to be really "aware" of what hew was doing, and since he is 55yo I want to trust him. :roll: