It's a great intent, but the truth is that the tabbed Warwick cover is flawed, and has been for a very long time. The tabs break, or lose their flexibility to engage. It's also possible that the base plate that the tabbed cover engages has an issue.
With a tab issue, the cover can fall off the bass in normal playing (have spent time on a dark stage with a flashlight trying to locate a fallen cover: just hope it falls shielding side up, haha), or it becomes extremely difficult to remove, depending on the circumstance. If it's happening at the beginning of ownership, it won't get better.
The normal Sadowsky screw-in cover is far superior. No need to fix something that isn't broken, right? (There is actually a compliment in this statement. .)
My experience is from owning 4 different Warwicks, all of which had cover tab issues. The easiest fix is to clip off the tabs, and tape the cover into place. Not a great look or functionality on an expensive bass, but at least taping works and is reliable. As an aside, Warwick is on it's 3rd version of JAN, improving it along the way. However, it appears they're still on v1 of tabbed cover, preserving and continuing its flawed design all this time.
To commemorate the new year, my resolution is that this will be the first and last time that I comment on this issue for the year. Happy, healthy 2022 to all Sadowsky folks!