I've been very happy with my String Wing. It's versatile and supports my stupid amount of money in basses. I can't answer whether it works with a standard slat wall, but their system is affordable. My bass holders do not have that tab, and I wish they did, as it would make them even more secure. They provide a plastic doo-dad that essentially keeps the spacing in place. The bass's weight alone keeps it safe in the channel. I can attest as an"industry expert" that Slat Wall is like saying Jello. It's become an ubiquitous term, but there are numerous varieties out there, and you need to check the dimensions (credit to NocoLaw) if you want to purchase a "generic jello" that will fit your hanger.