You keep caber on hand mainly for libido/ed issues. If you keep your E2 in check then you will not get gyno. Don't listen to whoever told you this stuff.
Sure, people get gyno using AI's all the time....that's because their E2 is still high and they didn't get blood work done durring cycle to adjust the dose of their AI to prevent gyno and other high e2 sides. These people who don't get blood work wait until they actually get gyno THEN they up their AI dose which isn't going to do anything to stop the gyno that is already there and then they start thinking their AI is bunk. To be blunt these people are idiots and deserve it. If you can't afford or can't get blood work done you really shouldn't even be cycling...if you do then you are just asking for trouble
He ended up with gyno until he got Caber? Caber may help hold off gyno a little IF you have elevated E2...but it sure as hell isn't going to cure existing gyno like you are saying. You use ralox/nolva to hopefully cure existing gyno if you are lucky and that's it....or get surgery.
Where are you getting this info from man?