Or maybe there is a third categorization I should use, such as "linguistic inclusivist"?
I believe that hypercorrections like "This is a secret between you and I" and "Whom is he?" are incorrect insofar as the speaker considers himself to be speaking in a formal, non-slang context.
However, I do believe that African American Vernacular English is a culturally legitimate form of English, so I disagree with extreme prescriptivists who want to quash out the dialect.
Does this make me a moderate prescriptivist? Or a hard descriptivist? Or something else?