Sorry to step in on a game i really never tried but since this topic is about a subject i can help, i couldn't help myself.
What can really be said about this is that everything that exists within the GS program is kept inside for obvious reasons, thats why when the new recruits get in they are trained by older members in order to get them up to date with the current methods. If any sort of policy is blasted outside of the GS program is usually from a former GS who left on bad terms or never really understood the real meaning of following rules. Methods are constantly changing, thats why new recruits are trained directly and not given some sort of guide since that would have to be constantly updated so whatever may be true today may not be tomorrow.
With all this said, if someone thinks about joining the GS team because they heard a rumour that they get some sort of reward, you are in for a bad surprise lol and i have seen it happen numerous times.
So if its something that doesn't concern you, as a player, shouldn't be of your knowledge.