Batman #50 Blank Sketch Cover Variant with Outer Paper Wrap 0

[BeholdersEye]

Question:

How should collectors treat the Batman #50 Blank Sketch Cover Variant with the thin paper wrap that's held bound under the staple, apparently to help protect the actual sketch cover itself from surface wear?

As it relates to CGC Grading, does removing this paper make it now "incomplete"?

As it relates to getting a CGC SS Sketch and slabbing, if you leave it on, then the artwork is obscured when it's entombed.  Or do you simply get a sketch on the thin white paper and leave the actual blank sketch cover alone (which seems odd since the paper is thin and you get no logos, so it would look odd if not weird).

I'd imagine it's almost like a poly-bagged book in that the removal from it's original packaging as published isn't necessarily compromised if it's considered a "throw-away" wrapper, 'tho purists probably would keep intact as well as not get a sketch on the blank.