Thanks to my catlike ninja reflexes, I caught my singlecut as it's upper straplock fell off. The nut unscrewed (despite the washer) and the lock just popped right out of the strap.
I have straplocks on two guitars, and ClipLock's on ~18. That number will be zero and twenty tomorrow. I've never, ever, not once had a Cliplock fail in 20 years of guitar playing. I figured I'd try the Schaller locks, and this is what happens.
Check that shit at every setup. I have to tighten mine like every 4 months, but better safe than sorry. Its like 30 seconds to take out a hex wrench and tighten it.