When I'm pissing in a urinal, the last thing I want to be doing is examining the urinal itself. And just imagine that urinal in a few months. With all those crevices, it would be full of dried up crud.
Unless it was covered in some kind of clear coat that I couldn't see. Something to make it smooth and crevice free. That thing wouldn't last a few months of piss and cleaner chemicals. Eww.