yep, looked up knife laws in FL. Open carry, well just about everything except ballistic which are illegal
Concealed carry, blade no longer than 4 inches, and in a closed position.
But just because you can, doesnt mean that you should. Ya gonna have a fun time explaining to the cops why you are carrying a Samurai sword or machete around, and its no match for a gun. Put your hand on it and you have a good chance of being shot.