I just this week got Joe Zabel's "The Greatest Card-in-Wallet Ever Sold", made by Barry Taylor of Barry's Magic shop in Maryland, and I'm quite fond of it (I'd seen it years ago when another performer showed it to me and loved it, but never got around to getting my own). Barry doesn't regularly make them anymore, but he said he had a few of the necessary wallets that he could add the finishing touches to he had found. If you're interested, you might want to see if he still has any left.
It's a billfold, similar to the "Real Man's", but the card loads into a zippered compartment behind the bill section, not under a clear window (I hate the clear window for various reasons, including that I at times use it for loading predictions, and that would seem hokey with a window). It also has the strongest, beefiest (yet slim) guide I've ever seen on a wallet. Quality stuff all around, and a very reasonable price.
P.S.-This is the one I referred to in my earlier post that I said was apparently no longer being made. I don't think Barry has many (in July, IIRC, he said he had three or four, and I just bought one of those), so get 'em while they last :o)