Hello, I am curious if anyone here on FPN has tried this Montblanc Pen Polish that is currently on Ebay... http://www.ebay.com/itm/Pen-Polish-Montblanc-and-other-HighEnd-Pens-Resin-Celluloid-Metal-etc-/251298456450 It claims to offer a two-stage, non-abrasive polishing system that produces "Insanely high shine." Also protects pens from scratches. And each bottle has a serial number to prove that it has been quality checked. Any advice or input on this product is appreciated. Thank you.