Invading your forum, hope its ok. Ya, guys definitely don't talk much in the bathrooms. If there is a line to use the toilet or urinal, there might be some talking, or if its a bar and people are drunk, as liquor loosens everyone up, but if not, def not much talking.
As for urinals, hate them. I won't use one unless I'm bout to pee myself, would rather wait for stall to open. Really is no privacy, someone next to you could look over and see everything if they wanted to; I just find that horrifying.
As for being "caught" in one, I don't think guys would mind much, if at all. They'd prolly think it was pretty cool and ballsy lol. I'd prolly avoid using the urinals tho if you're not a pro at using it, or if that bathroom is busy or if you have a "neighbor" using it next to you lol.