I opened mine. No cellophane, no wax paper, cards are influenced by environment conditions even though the deck is sealed. I can feel the wax on the faces of the cards and my fingertips get oily (<-- I don't know how to describe) after handling 1 minutes, just like de'vo's Blades. The heavy wax on the V.Slims cards makes the cards fan awesome and protect themselves from moisture.
I didn't compare them side by side, but I think this deck is as thin as the mid-80s golden-green Golden Nugget. However, the paper (stock) of this deck is much weaker than the GN.
A very special deck, smooth finish with heavy wax, slippery, thin (though the stock is poor IMO), traditional cut, ... worth a try.