Ah, jolly good! I've just noticed Facebook has suddenly made it possible to run a comment thread off status updates, or anything else that appears in a user's mini-feed - a very useful feature, if you ask me.
I've a friend down in Cape Town who comments on my status updates from time to time, but needed to use a rather horrible third-party app to do so (actually, almost all third-party apps are horrible, if only for the fact that you don't know which are data-mining scams). Now she doesn't. Huzzah!