I'm not certain I understand the difference. Then it follows that certain types of jacket/coat are exempt from the proper protocol of which you say some Brothers are ignorant? How about double-breasted?
One difference between the tails configuration and a standard suit jacket is the length of the coat at the front. Sorry, I assumed that you knew the difference. A tails configuration nominally does not extend below the waist line in the front, as to the full length (to finger tips, arms fully down and fingers extended) of the standard suit coat.
Brother Washington (as pictured) was from a different era. There are a lot of protocol differences between the 1700's and the 2000's, of course I am sure that you are well aware of that.
As to "ignorant"; Ignorant in this usage is defined as: {lacking knowledge or information as to a particular subject or fact}. In this case, in Texas it is standard protocol that the apron be worn above or outside all other garments. Rest assured that if you choose to enter a Texas Lodge room with your apron under your coat, you will (as my Brother JJones mentioned) be quickly corrected by the Brethren of the Lodge.
I sincerely hope that I have now satisfied your interest in my commentary.