Hey guys, just picked up my first pair of oakleys, the Eyepatch 2 in matt black. I am getting them with prescription lens' for work. I had a few questions about them. 1. Are these American made? The arms don't say MADE IN U.S.A. 2. Do the arms pop on/off easily? 3. Can the icons be replaced? If so, do I have to buy eyepatch specific icons, or will ones from another pair of glasses fit? If not, is there a way to remove them without damage to the frames and what icons fit the eyepatch 2 frames.