Flippinstick Mike, is the mans name, and he got back with me, said he only applied 1 coat, to not take away any of the detail of the mold. I don't know how much he has shot the molds, but said so far so good.
The epoxy is thicker, than this product, but if thinned down with denatured alcohol, I would think you could get it thin enough to not loose much detail, on the mold. I do not have the diamond clear product, but may give the epoxy a try.