I think you're misunderstanding me... I never claimed to change my ratio in the middle of a ride. I told you I don't do it often. I wouldn't want to be at studio, in class or at work and not have the option of changing it out if I needed or wanted to. Some days I don't even make it back to my apartment because I'm in studio all night (I go to architecture school). It's such a light item that I never even thought about adding it to my daily kit.