Finally sorted out how comments and webmentions are displayed on this site. It was kind of a hefty task since it involved sorting out WordPress comments as well. If everything works as intended (big if), webmentions should be displayed in a discussion thread below the post contents on permalink pages regardless of whether or not WordPress comments are enabled on that post. We’ll see how that goes!
As an experiment, I’ve turned on comments here, here, and on this note. Overall though, I’ll probably leave them disabled for the majority of my notes. This 2013 article by Kartik Prabhu sums up my feelings on the subject pretty well.