Travel Technology - Solar Bags - anyone tried them yet?

Have seen a few solar bags and jackets for sale online with built in connections for charging iPods and mobile phones and was toying with the idea of getting one. Has any early adopter road tested one yet? thanks

If the TSA drones have trouble understanding what to do about a MacBook Air, I'd hate to see how they'd react to bags and jackets wired to onboard solar cells.