Discourse Communities and Communities of Practice

Swales seems to have more of a checklist that tells you where you fit in with your discourse, while gee is basically saying that one is born into a discourse community, and they may have learned literacy in their own way and formed a secondary literacy.  This of course would be corrected by the sponsors of the primary discourse community, in this case most likely parents or a teacher.  Johns on the other hand adds to the conversation by saying that maybe "discourse community" isn't the right way to describe the community, perhaps "communities of practice" is a better way to describe the community.  Johns says this because she believes that in the classroom, students should learn from each others wide variety of communities of practice to broaden their discourse through experience with many different communities and their unique discourses.