I don't think Nu-Finish is a good choice because it's very abrasive actually. However, I don't see why a modern non-carnauba based automotive sealant that's designed to sheet water wouldn't do the same thing. Some modern sealants have amazing durability and ability to sheet water. I still own distribution rights for a large chemical manufacturer. If a sharpening shop wanted to test out a product I think would work, I'd be more then glad to send some out for free and see if they like it. It's an aircraft grade product with strong adhesion properties to stainless steel. Lot more cost effective than this too.