I'm glad to see STB4ME confirm that the sound was magnified by the recordings, as many here tried to point out, however, if folks still find 10 to 15 seconds of grinding is just too much to bear then here's an idea...
how about designing a leather sleeve with noise cancelling foam sewn in. Protects the finish and reduces the noise -- multi purpose accessory that can add another few bucks to the revenue stream. Plus, you might make a few bucks yourself by selling your design.
Imo that's a more productive discussion than reinventing the wheel.