Known worlder's find the Kurgans surprisingly educated, polite and civilized though their exoticism would still unnerve the average peasant. The Kurgans are educated and have preserved many things from Second Republic culture.
The Kurgan Caliphate believes that the Prophet Zebulon (Zaibolu in Kurgan) has preached in the territories of the Caliphate, most properly on Hira, and recognizes the Caliph as a Speaker of the Pancreator, very much like the Patriarch in the Known Worlds. They also have a sprituality based on the behavior of the Nomads in Al-Fashir, Irem and Hira.
Also, it have a strong presence in other Lost Worlds, like Antioch, who pays tribute to the Caliphate although it' doesn't recognize the spiritual leadership of the Caliph.