Even though the SDA specifically says:
TITLE 21 § 1290.8. Possession of license required-notification to police of gun
Section E - Nothing in this section shall be construed to authorize a law enforcement officer to inspect any weapon properly concealed without probable cause that a crime has been committed.
Though a person who is not a felon who is stopped has certain rights as a citizen...people seem to forget that a police officer is also a citizen and entitled to certain rights as well. I could cite hundreds of cases where Law enforcement officers were injured and or shot from non felons transporting / concealing firearms. Now granted the vast majority of gun owners in my experience are soft spoken, courteous, and law abiding but that does not mean that all of them are. On a traffic stop when someone hands me their SDA card I usually simply ask where do you Carry your firearm, and then I simply tell them with a smile that if they don't reach for theirs I wont reach for mine and leave it at that. But there have been instances where I have removed the person from the gun and I don't think twice about it and I will continue to do it...
It would be interesting to hear from a law enforcement officer how you would justify disarming a citizen with a valid CCW who has informed you of same in accordance with the law in light of TITLE 21 § 1290.8 which prohibits such action without probable cause.