Slices up or down?

Dear community, today is a completely nonsense, but nevertheless a wurming question of style: I have seen in the last few days constantly driving roadsters in Switzerland, but they had the windows above. Is that allowed? I mean no and have three reasons: First: Are we men or women? Second: If I am already driving openly, I want to have some air, otherwise I would have been able to buy a Targa. Third: Are we men or women? Greetings, Jan 🙂