As some have posted previously, a NJ carry permit issued to an armored security guard is valid only while on duty. That means you can't even carry going to or from work, let alone carry generally. The permit becomes invalid if you quit the security job and and only reactivates if you take another security job.
LEOSA does not cover armored car guards; they are private individuals, not law enforcement agents of government entities. Interestingly enough, though, the federal law that protects armored car guards to carry interstate while on duty was the model used to draft LEOSA.
NJ's carry permit is only issued to security personnel, retired law enforcement residing in NJ, or to those who are somehow able to convince a police chief and superior court judge that they have a "justifiable need." It is not a CCW per se, since the statute does not require it to be concealed.