I've never considered proximity skimmers to be a terribly immediate threat, so I've never made a purchase with that in mind.
However, I do have a
. My everyday carry wallet is one of those
, which I bought strictly because I love the convenience and speed of the accordion style card access, but it also offers RFID protection.
So I'm protected, even though I don't really think I need to be. I figure... it cost me nothing above what I was already paying for my preferred passport case and wallet, and if I have underestimated the threat of proximity card skimmers, I've still got some reasonable protection.
It's a win-win situation.