Lots of this info is getting way over my head. I just play my 2 row Hohner, 'cause that's what my father and my great uncle played and that's what was around the house.
Also, no one else I knew or played for had seen one before, so I was the best player they ever heard!
Bottom line for me is play happy, play loud and sing out.
Note: While he may be too comercial for some,Doug "Ragin' Cajun" Kershaw plays the Hohner 2 row diatonic. So I guess it's just what you make of it. Or how "pure" to the tradition you need to be.