This has integrated pretty seamlessly into my Hârnworld campaign, proving especially effective for gauging the attitudes of villages throughout the world. As I'm currently running the Kaldoric Succession Crisis, local loyalties vary significantly from town to town, and tensions are consistently high-making this tool highly relevant no matter where the players travel.
In particular, the attribute system has been invaluable. I use it to provide a concise, traveller-esque universal reference code that lets me glance at my notes for quick and consistent interpretation across multiple locations. It has genuinely enhanced both the narrative depth of my games, and ease of session preparation.