I went to the forum and read the posts. You are just beating your head against a virtual wall. The guy is a nut who enjoys argueing on the internet. His whole thing about yelling "He's Got A Gun!!!" in Home Depot and tucking his 9 in his pants is just more internet BS. Don't waste your time.
By the way, regarding open carry and hoster vs tucked in your pants, neither mode of carry is illegal. The pistol doesn't have to be in a actual holster. It can be tucked behind your belt, in your pants or stuffed halfway into a pocket. As long as it's visible and you can tell its a gun, ie the grip and hammer is sticking out visible, then it's open carried and legal. Of course you bend over to pick up a pennyon the side walk and it falls out and hits the ground you may attract someunwanted attention.Otherwise you get case laws like in mississippi where even in a holster the gun is partially concealed by the holster itself so then it's considered a concealed weapon. And that's just stupid.