KSD-G3 Anti-Pullout Device Discussion

Hi everyone. Has anyone bought and tested the KSD-G3 anti pullout gadget available on kept for her wed site? I’ve checked their reviews, but you can’t be sure if they’re genuine, so I’d love to hear your thoughts here. Most ball traps are simple enough to slip out of, which is part of the enjoyment thanks to self control. Still, my wife/keyholder had questions when I showed them her and noted that some gadgets like my spiral cage aren’t entirely foolproof. Thanks in advance for any input.