Well as an out-of-stater I have no idea how a leo may treat you if he saw you OC'ing. Thoughthis would give you more of a reason to sterile carry with out an id. There is noneed to identify yourself when you are doing nothing wrong. Though you can not carry within 1000 feet of a school zone (California has many.. many.. many school zones). Or else you could get in some real trouble. I am sure you are aware your CCW is not recognized here in Ca.
Your best betwould be to buy a locked container that has a spinning lock combination device. You lock in your gun and magazine and lock the case yet only lock it one digit off. This way if something happens you can unlock the case with a quick spin of one of the dials, only you will know which one to spin and which way. This way, you don't have to worry about school zones or carrying in your car.. etc.
If you can get past the dumb gun control laws, hippy's, liberals, corrupt legislators, illegals, gangs, slow drivers.. and dianne feinstein, California isn't that bad of a place.