I have checked cases under the state law, and the law requires a permit to carry concealed on the person. There is no law or case that I could find that defines what is "open carry." If the gun is plainly visible to anyone 30 feet away, I would say that is PROBABLY open. If it is hidden in a holster that covers the entire thing, who knows. (Walk into a police station that way and let me know what the judge says! kidding of course) It is a shame that the legiscritters can't be more clear in the statutes. There is also a difference between an obvious holster and a Sat Nite special hidden in a belt pouch. But try to put that into legislature-ese! To be safe, some significant part of the gun should be visible to anyone approaching the armed person on that side. After all, the statute says a permit is required to carry the gun concealed on the person. If the holster conceals the gun and it is on the person the strict language of the statute to a liberal big city anti gun judge may get you a criminal record. If it were me, I'd want to make sure the GUN was visible.