The same thing happened in the late 60's when motorcycle riders had to wear helmets. The helmet had to be on an official list and every time you rode you had to plan on being stopped and checked. Helmet was excuse for stop, but license, inspection, warranty check and anything else the Police could think of to keep you standing on the side of the road for a hour or more.
Same is going to happen to OC'ers. So just carry concealed when you can.
Happened to me in 2000...