daemon hunters and Grey knights questions

It says in the book that all grey knights are psychers? soo what units are psychers in their army exactly? I sent a letter to GW asking that question too....but it was through customer service anyone got an email for there FAQ department?

If you look closely at the codex, it should mention that grey knight heroes and I think the seargent upgrade for the terminators can purchase certain psyker powers.


::EDIT:: Almost forgot to mention... They all suck. Really hard.

what i mean by the question:
i know that the termi brother captain and the heroe can get psy powers (that all suck) but do the standard guys count as psychers because of their generic powers (shroud and stuff like that)
soo does a unit of standard grey knights count as 0 1 or up to 10 psychers in that unit?

The Psychic power for Grey Knights is really just fluff. In game terms, it is slightly meaningless when it comes to using powers. All Grey Knights have a natural affinity for Psychic power which is why they can resist powers directed at them. By the fluff, they are the most powerful psykers in the Imperium, in the game, they don't do such a thing, or, at least, not since 1st edition when Grey Knights were some of the most powerful guys on the board.