I've just told you that is not my policy.
As it happens, I doubt there would be a problem, but I'm certainly not going to carry out fool experiments to satisfy your curiosity.
As it happens, you're wrong. Your speech rights are yours to exercise. If you act on those speech rights and run afoul of the constitution as a public employee you'll be exercising your speech rights as a non public employee.
But I am happy to hear that you don't subscribe to such a policy.