Paying for an Underground Fare With an Apple Watch

Apple switched on Apple Pay yesterday in the UK with a reported 250,000 retail locations supporting it from launch. In addition, you can use it with the contactless readers in the London Underground. Pay close attention to the image in the linked post: the Underground readers are all on the righthand side as you walk through the gate, but most people are right-handed, so they probably wear a watch on their left arm. I wonder if frequent Tube riders will make paying easier by swap which wrist they wear their Apple Watch on.