I got an e-passport. And I keep the card in the little shell they sent with it, since they said to do that, and I am a good citizen who follows orders. Wish all my credit cards came with those. My only gripe is that the picture on the passport card is washed out, it looks over exposed, yet it is the same picture on my passport since I got them at the same time.
Some of the better travel supply places have started offering RFID blocking passport holders.
Sign of the times, I suppose.
Wonder if aluminum foil works? :)