Apparently I purchased 100 cork discs at some point, because this arrived today.
While trying to think of a use for them, I remembered the new engraving UI, so I figured I’d try two things at once. Definitely haven’t gotten the settings dialed in, but the concept is working for me. More experiments will be done.
Overall, I didn’t find the slider or preview helpful. Especially since the image was inverted. Probably much better results on proofgrade.