Actually the N is for Negligent, but Nasty works too in this case.
I have only known one guy who put a stripe down the right leg of his pants while trying to holster his sidearm with his booger picker still on the bang switch. He was in a stressful training situation (and a bit of an idiot anyway) and just got a bit rattled. I've heard of others. If that ever happens with appendix carry...well, you can just imagine the results.
And if you say "won't happen to me", and I hope you are right, just remember that under stress we will not necessarily do everything we are supposed to do. Appendix carry and other forms of carry that by their nature point the muzzle at your flesh or the flesh of others require extra attention and practice.
IDPA Member A00640
Founding Charter Member - Middle Tennessee Shooter's Club