The paint is worn off of the first few positions on the fingerboard of my Mahalo. Does that count?
What I notice about poly finishes over laminate is that they tend to cloud or get a little milky looking when exposed over time in quick changing temperatures.
This is a bad thing in guitar circles maybe even in uke circles although it doesn't affect the sound or functionality of the instrument. I'm one of the few who like it.
I'll take a pic of my 22s that I deliberately kept in the car during the rainy season in chilly air and in warm indoor air and now it has developed some cloudiness on the laminate rosewood. I'll show it soon.
Oh, I get it: these aren't wrinkles, they're "patina"!