I’m part way through Darkening, with some experienced characters who had played some home brewed and a few of the other published adventures (mainly the Gibbet King sequence) thrown in. We’ve finished “The Last Good Years” and after we are done with our Night Witches game in a few weeks, we’ll be diving back in.
I’ve found that the Darkening adventure seeds work pretty well – when they hear about something happening, or some event occurs where they are, our companions have usually got involved. I’ve definitely let the characters drive a few adventures on their own, too, which has come up now and again.
One thing that has helped, I think, is that some of the companions are now really quite powerful, so they seem to have naturally come to accept that they are the ones people come to when heroes are needed 🙂