Parts range high
I have some built into my planet waves strap
You can never go wrong with DiMarzio locking straps.
i use DiMarzio clip lock straps
The RZK-II was shipped with Schaller locks and I use them on this guitar but on others: no ^^.
They do theri job ;-). I wouldn't say that they are uncomfortable.
Oh, I never used straplocks before too. But now when I'm playing on my explorer, the front part of the strap is hanging with so angle that it is going to fall off all the time. So I certainly need straplocks. Are Schaller straplocks comfortable?