Checking the nut on my strap lock is a regular component of my pre-flight check list EVERY time I play. I only had to watch my friend's strap come undone and his Martin fall and bounce off the stage like a Bernie Madoff check once to learn my lesson about checking straps and strap buttons, etc. It still hurts to even think about it.
By the way, you're going to LOVE the Moody straps.
Bill, tgo