Very interesting. I don't see how the expatriate thing helps that much though. Current Fl law is already, without question, contrary to the Fl constitution. The supreme court of Fl has also already given all white people permitless carry in 1941, which is now ignored. The state could say that you have to carry in a holster. It may even be constitutional to ban open carry, as long as there is no permit requirement to carry concealed. Such would be too much of a stretch, but the judges making the decisions will be biased against us, and the word "manner" will give their evil creativity enough room. The government's courts are evil in the extreme, the system is set up to maintain tyranny, and so I don't see the state ruling against itself.
Getting the legislature to cross out 'briefly' is probably the only realistic chance we have. There just isn't enough $ to fund a failed expedition through the government's courts.