I have a Epi LP std. I love the look of the stainless and nickel pickup covers.

I want to replace the stock pickups with SD alnico II pro's. I have heard the covers darken the sound a little. How much of a difference is there between open and covered?

I want to get a little closer to my slash sound. Should I get the open or not?

It is a very subtle difference and neither one is going to make enough of an impact to get you closer to or farther from the slash sound. The best answer is "try it yourself."
not exactly true... The covers themselves don't make a big difference, but how they are wax potted can...
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Thanks guys.

I was really hoping to hear that I would not be able to tell the difference. I will get my pickups with nickel to keep the guitar shinky. lol