Well so far a lot of the Southern state governors, Oklahoma, Texas, Arkansas, and Louisiana are the first ones to come to mind have given the state TAG's permission to grant authority to certain National Guard members to carry while on duty on state property.
So far nothing has been put in writing here in Oklahoma but one thing I do know is that it won't mean that I can strap on and go onto an active duty post.
As for any other time, while out of uniform I have to abide by state laws. While in uniform it so far sounds like it might become an out of sight, out of mind, concealed means concealed policy.
As of now I'm just taking a wait and see approach.