Maybe I'm naive... I work for a bank though and I dont honestly buy into the whole RFID protection... It isnt heavily regulated, and it isn't tested to see how well it does... and I have never used anything RFID blocking, and have only had one issue (2 weeks ago mind you On my birthday

) in the 10 years I have had a bank account..
I do think it would be more of a concern of people in heavily populated area. Like in NYC where you are walking in crowds daily..