Sir shark enjoys these examples of legal trappings and may have 2 cents to add...
as far as ky CDW permit, instructions stated that it 'allowed' the possession in the vehicle while on school grounds, in a sense, its the trump i reckon...i *think* OC w/o a permit [legal in ky] is still a no-no though...
TX State Constitution
AART 1, SEC. 23. — Every citizen shall have the right to keep and bear arms in the lawful defense of himself or the State; but the Legislature shall have power by law to regulate the wearing of arms with a view to prevent crime.
Given that the legislature may regulate the WEARING of arms, the State cannot in in any given situation prohibit both open and concealed carry without violating the first clause. And in no way does the above prohibit places one may KEEP arms (such as in vehicles) nor authorize the legislature to create prohibited places.