So I was able to talk with a MSP investigator yesterday who said the same thing. I can at least show a request was made through FOIA to buy me time while it processes. I reached out to my agencies FOIA office yesterday and left a message. This is a good little loophole. My security manager understood my request but naturally they will not touch anything with the word firearm in the request. This is the second agency that had this policy. It sucks MSP tells us we can use it but knows damn well half the agencies wont comply. Another funny thing is that even thought the scope of the investigation is less for a secret and than a top secret; they are adjudicated the exact same. Meaning, there is nothing derogatory that someone can do in which they would be granted for a secret but not a top secret.
Unless something has changed a secret by itself isn't going to get you a permit. Go the business owner route.