Well I decided to be a mini-guinea pig on this company. I ordered up a Valve cover gasket set. Haven't installed it as of yet, but by the looks of it, it looks decent! (Y)
It has a Fel-Pro number on it, VS50434R. I looked it up and low and behold it actually comes up as the part for DSM's

The package it came in also said "Rock Gasket" on it? Never heard of that...
I figure this one is a half ass safe gasket to try it out on, and it's easy enough to change out if it does fail...