You probably did. But in reality, they're in widespread use, and AD/ND's haven't been a problem with this holster any more than the average holster. FLETC concluded that novice+speed shooting+serpa= novice fail. They don't allow them for basic firearms classes. They do for advanced. That said- the SERPA simply isn't a duty quality holster. Which is why no self-respecting agency uses them for uniform (think blues) duty. It is, however, as Bren pointed out in another thread, the number one purchased holster for troops buying their own gear for deployment. Not perfect, but adequate. And inexpensive.