I dont see why this should be seperated from the gallic junkers. Every gallic junker knows about their role in stealing technology from sirius - but only a few sirius junkers know about it, and none of the other sirius factions know that junkers had anything to do with the theft of that technology.
Junker rumors in gallia even admit that there will come a time when the Sirius and Gallic junkers must unify or seperate (i.e., sirius junkers will become hostile to the rest of sirius, or they'll become hostile to the gallic junkers when they learn the true motives of the crown).