Re: Do you use Straplocks?
I have them on a few guitars – all Gibsons.
The Gibson strap buttons were an awful design until fairly recently, when they were significantly enlarged. Actually, it was a beautiful design, cosmetically speaking. But the buttons were just too small.
I have no slippage problem with Fender strap buttons most of the time. If I am using a kind of blown out strap (like the two I've had for 20+ years, or a newer cheap strap that I don't fully trust), I will put Grolsch gaskets on, though.
On the guitars that have them, I use Dunlop Dual Designs...and I don't attach the inserts to the strap ends. I put the strap on as normal, and then put the inserts in, as a backup. Works just as well, provides better strap geometry (strap hugs the guitar body closer), and doesn't dedicate each strap to strap lock equipped guitars only.
I probably wouldn't even bother if those weren't already on there. I put them in 14 years ago, and they're a holdover from back then. I bought two new Gibsons in 2004, and I was paranoid. Nowadays, I'd probably just convert to Fender or G&L style strap buttons on a Gibson, and use Grolsch washers to be safe.
I use the old style thin leather straps on most of my Fenders. Those have tight eyelets that hold on very well, and the eyelets stay tight because I leave the straps attached to the guitars (the eyelets really only wear out from straps being taken off and put on). This keeps the eyelets from blowing out due to frequent attachment and removal of the strap. No locks required in these cases.