Toothpick with Elmers/wood glue works great...done about half dozen guitars that way in recent years.
I prefer Dunlops now...as I've found three failure modes with Schallers. 1. nut on straps coming loose. 2. screw on strap button (cut-out end of guitar) coming completely out. 3. strap buttons losing their original shape thru wear to the point that the u-shaped cup no longer holds button secure (but I now know why this happened to my son's LP).
It's next to impossible to accidently push a Dunlop release button while wearing the guitar...IMHO.