Good question Frogman, beside the fact that I'm in pursuit of that vinyl LP and I think it's a most significant jazz tune, I had no real point, but I realize that is the central cause of confusion.
It seems that even "jazz musicians" are confused by what is, and what is not blues, and that includes Miles Davis. He said he liked Blues but gave no example. I bet nobody from "Clarksdale" would be confused; they can tell the difference between blues and jazz. I go along with the people from Clarksdale.
Anytime jazz musicians have spoken of the Blues, I always went away with a question mark on my mind because they are never definitive; it's always jazz with a "blue feeling" but not real blues.