Dammit, Janet, you're right. Been too long.I am afraid you have it inverted. The 1820 ban on concealed carry exempted travelers.
From the 1831 statutes (which I believe were the same):
Sec. 58. That every person, not being a traveller, who shall wear or carry any dirk, pistol, sword in a cane, or other dangerous weapon concealed, shall upon conviction thereof, be fined in any sum not exceeding one hundred dollars.
(Interestingly, sec. 57 makes it a criminal offense for a licensed tavern owner to charge more than his published rates and sec. 59 criminalizes adultery.)
My theory of "otherness" is based on a metric s-ton of research I did back in the day (I think it was for the first SVF appeals).