My only concern with this is not knowing how different Android manufacturers will report different stylus buttons. Right now, I support triggering the stylus button action for either stylus button. The one thing I'll have to do is, if I add a second stylus button action, I will default it to having the same action as the first button so that users won't see a change in behavior. Users that have a stylus with two buttons can then set these to do different things as needed.
Mike
Mike