#2
cosmetics, just prefernce mostly, also i think the cover impedes the p/us, like blocks them slightly, not noticable of course but some people are picky
#3
Mostly just for looks. Some say it'll affect your tone, but it will be HARDLY noticable.
apparently UG's only type O-


Quote by Strike9

Thanks jb_designs.
#6
Quote by xxgenocide98xx
It slightly reduces the treble.

Exactly. Covered pickups are a bit less bright sounding, so you might want to hear the difference before buying. Chances are you won't really care too much, but it's worth testing.
#7
If you have cover-less pickups you can get some sheet metal and cut out dimensions of your pickups then weld it so you have a cover, the magnetic field the pickup produces should hold them for you unless your using something super heavy. The difference isn't very big, I can't even tell the difference when im playing with other people.