Anybody used this to integrate Discourse & Buddypress?

I’m here thinking to ask that precise same question.
Help Me, Obi-Wan Kenobi. You’re My Only Hope!

I haven’t used this with BuddyPress specifically, but I’ve used it on three different WordPress sites and see no reason why it wouldn’t work on a BuddyPress site too. The reason: the function of this plugin uses core stuff that BuddyPress doesn’t change. Basically, when a user has an account on your website and then tries to access Discourse for the first time, it automatically creates their account with the same username and credentials as the WordPress site. And then ongoing, as long as they’re signed into WP they can access Discourse. It’s really slick.