on youtube there are a few guys who open carry in Florida while fishing. It's legal as long as you are hiking/camping/fishing ( ianal/afaik)
The cops almost always freak out, when I open carry in Reno, no one says anything, a few notice and cops never care.
Fishing, Hunring, or camping. Day hikes are not covered. I've had a very tens conversation with FL fish and game about weather or not a hike while I am on an overlanding trip counts as "camping". I convinced him it did, because while I was not at my campsite, I was clearly away from home and sleeping in the forest, but it took some convincing and googling of statutes.