Smitty;
I agree with EVERYTHING you said EXCEPT, DOWN HERE... AN is ALWAYS used before any word beginning with a vowel or "H" (an implied vowel). I KNOW THIS IS DIFFERENT "up yonder"...... BUT, it IS Queen's Englsh, and we still observe it, here.
DOWN HERE.... It's ALWAYS AN old.man.. AND AN honorable man.. Anything else WILL get the Hersey beat out of you. notice I left OUT the second h in Hershey.... That was purposefully. DOWN HERE, Hersey was an an honorable Walsh family .... Hershey is synomous with drifter, scalawag, or other reprobate.
We don't care how y'all spell it or say it up there