See my reponse to Nate. I recall one of our more "famous" cases here... the owner of a jewelry store, who frequently carried either large sums of money to the bank, or valuable merchandise to his store, applied for a carry permit. As his "justifiable reason", he pointed out how he had been mugged previously, and the nature of his business demanded that he be able to protect/defend himself. When asked about private security, he showed that the cost of a full-time private security guard would cost him more than he made from his business annually.
The judge's response to his request? "Denied. Perhaps you should move your business elsewhere."