I do point out with the above that, as you mentioned, there is still a lot we do not know about nutrition. Myself included. The facts are presented beautifully in your write up; I would argue about the omnivore classification, as we (who are omnivores) also lack a chambered stomach and an enlarged cecum (our cecum is actually our appendix). But I won't, as I respect the information as coming from someone who is knowledgeable in the field.
I am leaving the discussion until I have something more meaningful to add; have fun!!