Did you happen to get a cover with the slugs exposed? I would think that, it they don't make the cover out of a pre-treated (black) material, exposing the slugs might allow any paint applied over the top to flake as well...
I ask as I'm leaning towards getting the dual rows of the exposed slugs; thought they looked absolutely sick in Nolly's B2...
Anyone have personal experience with both the NB and the PK in a mahogany guitar, and would care to weigh in with a comparison?
R,
Ben