I have used Camp Dry in the past. It is kind of like Scotch Guard I guess. It is sold as a waterproofing for tents. I sprayed it on a old Herters parka I have. The parka material in kind of suede-ish on the outside, not smooth like a columbia coat would be. So, I can't really attest to it being shiny. I would say it is not though. It seems to have worked, although I really don't enjoy hunting in rain much and usually pack up and leave if I am in any significant downpour.