<< I've never heard of anyone tinting their whole windshield either, you might do a sunstrip at the top but never the whole thing. >>
I was down in Puerto Rico a couple years ago for spring break. We were in the center of some small town on a Sunday afternoon, some sort of festival was going on or some such nonsense. A car club was there, I won't get into how the styles differ from the US to Puerto Rico, but some were far out. A few, like 5 or 6, had the entire windshield tinted except for about a 3" strip in the middle. Looked pretty silly if you ask me.