Langka on paint chips

Does anyone here have any experience using Langka for repairing paint chips?

I'm thinking of giving it a try on a small rock chip. If anyone has ever used it or knows of any tricks, please post them.

Thanks

http://www.langka.com

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1988 black on black Coupe
http://www.cheaterswayside.com/911/gallery.asp?sort=0&userid=339

lots of people on the Rennlist have used it with good results. Just let the paint dry, over nite or longer, and don't forget to rewax the area.