Not a fan of any mechanisms with hidden springs, ball-bearings grub screws and such.
I believe mostly in a bigger deeper button, an upsized screw and good leather on the strap.
From what I can see BIG Strap has been getting cheaper and cheaper with ever-more-flimsy leather ends, which is why so many guitarists feel the need to lock 'em on, or they flop off
But putting a Lock on your thinner strap end won't make it stronger. I prognosticate over the next 5-7 years we are going to begin seeing a lot of strap end ripping failures. I hope not, but what I see In stores really gives me pause for thought.