I bought the dead tree version after reading through it at Gen Con, just based on the fact that it is such a beautiful book. I haven't had any time to go into any more depth than you have, though. I could see running just about any type of campaign here; the Dark Tower came to mind as I was reading it, along with the influences you listed. In fact, I think any campaign could, through its course, touch on any kind of genre very easily. I'm looking forward to getting a chance to run it.