A bridge cover creates a magnetic sonic field that increases the tonal and visual quality 100%.
Then again, maybe not. Besides who you gonna believe, your ears or your lying eyes?
Advantage: it's free to not have a cover
Disadvantage: it's about $24 for a cheap one
A scantily clad woman is a lot sexier than a completely naked girl. And so it goes with basses, then again, maybe not.
All said and done, I'll probably clad my Squier Jazz bridge with a cover. The one I put on my P-bass looks outstanding
but I'm still waiting for that sonic tonal boost.
Tal says, No to cover; Bob says yes.