In terms of peeing on ones own worn shoes, I can say that I do. I do it often, its a fantastic feeling and for those who like "well worn" it really does ad to their patina. Leather soaks it in a bit and the glue can become a problem, suede soaks right through, but they seem to stay strong for a long time, patent just tip it out and you wouldnt know anything had happened after half hour on a warm day
I once pissed into a pair of patent heels and left them for a day. Next day when checking up on them, I noticed that they haven’t leaked a single drop, that was really cool