I know what you mean...I moved to MS from Virginia.
Yes, the laws are vague and contradictory, and a recent AG opinion only made it worse. The state consitution only permits regulation of concealed carry, yet a supreme court opinion and the aforementioned AG opinion appear to define CC so broadly that it is literally impossible to OC.
The previous logic was that, under Mississippi law, OCing was just CCing badly. Therefore, if you had a CC permit you should be fine: either you're OCing and that's not technically illegal, or you're CCing using the "partially concealed" clause. The AG opinion, which is full of legal and logical fallacies, appears to negate this tactic. It doesn't hold the power of law, but it could lead a police department to arrest an OCer and a prosecutor to file charges based on its [mis]interpretation of the law.
I don't expect any improvement until somebody gets arrested and charged and takes it to court. I expect to move out of Mississippi and back into the 21st century sometime in the next year.