Open carry - probably not. The thought in the courts is that if some carry is permitted, other forms may be regulated/prohibited. It's the near total lack of any ability for any law particular abiding person to carry at all that is the crux of this decision. If shall issue CC becomes the law, don't expect to see any movement on OC.
All the laws that need to be treated equally probably won't fit on a card, unless you have a microfiche reader. A small printed pamphlet - in places like CA everyone who carries should keep one handy. That goes for other repressive areas as well.