I hate having to keep seeing this stuff. The Grey Knights, Deathwatch and Sisters of Battle are NOT Chapters in ANY respect. They ARE each the Chamber Militant of their respective Inquisitional Ordos. They do NOT fall under the Codex Astartes nor follow their Organizational Tables nor Logistics chains. They are entities that perform the necessary physical tasks for their Ordos as directed by their assigned superior(s).
This is continually misunderstood in the TTG and also in the RPG by those that cannot read nor simply think outside of the tiny box that publishes the GW 40k TTG Player Manuals also referred to as Codices. FFG is sanctioned and licensed by GW to produce these RPG's for GW because GW realized that when they've tried to....they've failed miserably. FFG is far better at it than GW is, FACT. Keeping with canon is the responsibility of FFG and I would think that GW monitors what is put out before it gets published (their IP and all).
Once again....Chamber Militants of the Imperial Inquisition are NOT Chapters !!!!!!!
Your misplaced anger seems to be only rivalled by your ignorance.
Have you actually read any FFG books? The Deamon Hunter book?
Because they continually refer to the Grey Knights CHAPTER.....
Or how about Forge World's own Imperial Armour books?
Siege of Vraks, Part III, page 8: - the secret Grey Knights, an entire CHAPTER of the Adeptus Astartes dedicated to the combating and banishment of Daemons.
That enough canon for ya'?