A Question about Guitar Pickups?

I Currently have a Alpine White Epiphone Elitist Les Paul Custom. I took out the treble pickup (60ST USA Humbucker) for a Gibson Dirty Finger pickup. When you buy the Gibson Dirty Finger it comes as a "open-coil" pickup, so I bought a 24k gold treble pickup cover for it. I was wondering if putting the cover on it affects the sound any bit.