About 10 years ago I had both nips pierced and thought I could get away with putting band aids, then a layer of surgical tape on them, then a rash guard wagering I'd be pretty much safe during rolls. Personal experience....I was sooo...dead..wrong. I'm lucky I didn't get one of them torn completely out during being on bottom of side control. You could go the "try yourself and find out route," but I'm gonna say that over a long enough time period it's a 100% chance of going quite badly. Sorry to burst the proverbial bubble for ya, but when it comes to the safety of my fellow Nibirus/friends/family, I'd rather you be able to make an educated decision when going into something. Good luck on your life decision on "To Pierce, or not to pierce, that is the question."