wow i've never heard of these before, do they last? most importantly, plastic.. does it stink up after awhile (Card games, spills blah blah blah)? I had a really nice set of plastic cards which costs pretty cheap, they were nice to do riffle shuffles back then (it was bridge size for my asian hands still can't handle poker sizes very well yet, my hands are still considered big..) but after awhile I found that it really stinks of some weird odor, tired washing them and drying them individually but it didn't work so I left it in its case stack on my shelf for memory.. :'(
How did you wash them? They usually recommend a mild dish detergent with careful drying, individually laid out on a towel and wiped down.
If they still stink after that, try using a "puffy" brush and giving the cards a light dusting with baby powder, wiping them down immediately after application. If they still stink, it must have been cheap plastic - some plastics will retain certain strong odors.
As far as the gold and silver versions of this deck - if I brought them to a poker table, my players would toss them out the window! They're very difficult to read quickly because of them being monochrome. Cool looking, for sure, but not practical.
That same "Awesomer" website had a set of monochrome white and black card decks as well. They'd be just as bad if not worse. And the iPhone deck would have made much more sense with colored indices. But some of their other decks are pretty awesome!