quimperain doesn't have any room to argue with his master's ideas about how to marry the school of carian glintstone magic and the incantations of the fingers because he was a crucible knight before he came into the service of the carians

janne became a preceptor purely through nepotism but uses it for his own nefarious (read: benevolent) means (hes basically trying to combine the healing power of finger incantations and the combative aspects of carian and glintstone sorceries)