I provided the cite(s) to the statute and the legislatures intent is in the statute language.I am not presuming. Even after all of the discussion, I am not convinced/sold on the legality.
Have previously said that IMO it will come down to a court of law to render a decision and that I hope he is proven right. Wished him well too.
The Missouri legislature could have included the phrase "or with a recognized/accepted permit from another state, regardless of age of issuance" - It did not, which leads me to legislative intent and to believe the legislators did not intend to leave that door wide open for residents of Missouri. OTOH - you may have found a legal loophole. Good luck/best wishes in demonstrating that.
What if there is not a court case...ever? What can we deduce from a non-occurrence?