I 100% know people who never discussed their religion/culture before starting to date and then refused to address their obvious religious/cultural differences for way to long. I live in a major city in the US so we have tons of people from all sorts of backgrounds. Some people I know don’t want to bring up their religious/cultural beliefs until they know the person a bit better but by then they are in deep and don’t want to leave despite the glaring differences.

I seriously thought about this and in my opinion, no. With it upside down, the head opening would be right at your privates making them more like pantalettes (old timey open-crotch underware).