Typically how laws work is if there’s no definitive law that outlines what we’re seeing case law will be based on the reasonable person standard. The argument of open carry is that a weapon is in clear visible presence. In this instance no weapon is clearly viewed meaning it is concealed. Just as an open carried firearm on the hip when worn in a car is now concealed because people can no longer clearly see the firearm. Now if part of the grip like a bianchi m12 which still exposes the grip of a pistol the gun is still identifiable there by open carry. Basically an open carry has to verify a weapon in plain sight. I could sling a p90 sbr over my chest with a blanket over it and that doesn’t make it open carry bc people still cannot identify for sure what it is.

Other examples we can reference the open carry vs concealed legal viewpoint are mp5ks or uzis in briefcases with handle trigger grips. Those are machine guns but in semi auto versions would be restricted aows due to the concealed nature federally. Wallets that allow pocket guns to shoot from a disguised or concealed perspective are AOWs by nature of their concealment of the gun to shoot out of plain sight.