From the ad copy and the photos, I'd say these are poker sized. I can't determine just who did the printing, but most (though not all) USPC-made decks mention that fact on the face of the Ace of Spades, while this one only says "Shifters". For the cards to feel "soft", they probably have a stock comparable to Aristocrat Banknote 727 reprints - and I seem to recall flourishers didn't like that deck much because of the softness.
Maybe I'll stop by Tannen's on Thursday. I've been meaning to stop in for a while now. No guarantees, though.