I understand perfectly and am very fimilar with his music. I think he should still listen to some early Chenier so that he will be able hear the possibilities of the piano accordion.
Several years ago while exhibiting in Montmagny Quebec we went to a concert there and heard a band from Beaumont Texas playing cajun on the piano accordion. It was a four reed instrument and specially tuned and while not authenic they had the technique down pat. Sounded very, very cajun. But then, I like the sound of all accordions.