I played Montsegur 1244 tonight with my Durham 3 homies. There were four of us - Me, Joel, Clinton and Remi - and the game methodically delivered all the goods I have seen previously in play.
With four players, we each had three characters - one primary and two secondary. We found this to be a bit too much, and in general faded one character each into the deep background. One of mine, Raimond, never appeared in a scene. I made sure he had an impact on the game from offstage by establishing that he beat his wife Corba (my main character). Coloring him as a monster drove her relationship with their daughter, who was Remi's main character. But in general, the game focused on eight characters and this felt right to us. With four players it also went pretty fast! We played an entire game in a little over two hours. I missed the extra interaction six players provides a bit. Because we had to hit our limited scenes hard, things got pretty dramatic pretty fast.
I love the way Montsegur provides you with everything you need (once you've assembled the peripherals of course) and both guides you in play through "do this now" prompts and doesn't require anything else. There's no game junk left behind, no dice, no bric a brac. It's very streamlined.