If there's a constitutional guarantee of a right to carry in
some form, then I wouldn't worry too much about the state's right to regulate it. Right now, states that allow open carry are willing to fight people who practice it because they think they can eventually win. Once everyone knows that open carry is here to stay, they can be pressured into passing concealed carry. They will get sick of complaints from police and members of the public about armed people everywhere, and they will therefore use the typical politician's solution - compel everyone to conceal their weapons to make the complains go away
But they'll never do this as long as they think they still stand a chance of eliminating any form of carry.