While I have to agree on the point that Ragers are ennemies of the Warlocks, religion has very few points related to cabals. Of course, Imms are almost all parts of a cabal, but I will say what many imms told me when I was asking.

Religion and Cabal are two different things. You can be a follower of a religion without being in the cabal..As long as it's part of your role. You *can* be a mage who follow Thror, if it fits your role and you RP it. Sure, Ilraeth is a godness of warlocks, but she also have her religion which about anyone can be part of...It can be tricky sometimes to be in a situation like that, but if you really Roleplay it, there shouldn't be any problems.

To some limits, a rager could have the sphere magic. But it might means he chose it as a focus to destroy it. It's all a matter of point of view.