I’m not sure if we’ve ever had a discussion specifically on modes of carrying weapons. If we have, it’s been a while.
This discussion assumes that a fairly large number of people will carry and are carrying guns. With that assumption in mind, does the mode of carry make any difference to you?
The default assumption in most places, since the 1980s or so, is that concealed carry is the norm. Many discussions about guns have a strong component about making sure that people who carry concealed do so responsibly (although “responsibly” is defined in many different ways). But that was not always the case.
Open carry used to be the default assumption, at least in some areas. I’ve looked at about half the state constitutions so far, and this is what I’ve found.
Colorado Constitution, Article II, Section 13:
The right of no person to keep and bear arms in defense of his home, person and property, or in aid of the civil power when thereto legally summoned, shall be called in question; but nothing herein contained shall be construed to justify the practice of carrying concealed weapons.
Montana Constitution, Article II, Section 12:
The right of any person to keep or bear arms in defense of his own home, person, and property, or in aid of the civil power when thereto legally summoned, shall not be called in question, but nothing herein contained shall be held to permit the carrying of concealed weapons.
Louisiana Constitution, Article I, Section 11:
The right of each citizen to keep and bear arms shall not be abridged, but this provision shall not prevent the passage of laws to prohibit the carrying of weapons concealed on the person.
Mississippi Constitution, Article 3, Section 12:
The right of every citizen to keep and bear arms in defense of his home, person, or property, or in aid of the civil power when thereto legally summoned, shall not be called in question, but the legislature may regulate or forbid carrying concealed weapons.
If anybody is interested in looking up their own state, this site has a list of many (but not all) of the state constitutions.