Hum!2 I'm too much in the hurry to post: excuse me..
Dear TIG I just have made a first quick test of your [Plugin] Fix Reversed Face Materials
@tig said:
My FixReversedFacesMaterials tool flips faces where you have applied a material to the back and it's wrongly oriented.
It flips the face and reapplied the material, keeping UV-mapping etc.
very powerful tools to help to export a model in a rendering application

-Fix Reversed Face Materials
-Fix Reversed Face Materials [Forced]
-Reverse Faces and Materials
-Delete Back-Materials
it seems to me that the main purpose is basically to bring materials to front, changing if necessary back textured faces by front textured faces.
A common question:
When both front and back faces are textured, How can we know what face is front, what face is back.The Entity Info box don't reply
@tig said:
Model in Monochrome mode with a distinct back face color, if you make a reverse face select it and use Reverse on it.
It's almost essential to have a shortcut set to Reverse.
I have one set, and also Orient with it+Shift.
Yes shortcuts are a good idea. But that want to say that each face have to be treated one by one 
simon