Nicest owner is a guy I've seen a couple of times driving a black 991 Turbo S, always smiles and waves at me, a couple of weeks ago I saw him again at a cafe where he was just showing his car to random people and let me take some interior shots:
Meanest owner I've met was in Berlin, some guy in a C63 Black Series noticed me taking pictures, stopped the car (no traffic on a backroad) and rolled the window down and started questioning my intentions with quite a heavy tone, and at the end basically told me that if I put those pics on the internet he would kill me with throat slitting motion. So here it is, I'm waiting:
(You can already find a lot of pics of this car on the internet, autogespot etc. so... Lol)
I was on a holiday there so I didn't bother, but if I were a German I would have probably reported it to a police or something.