I know that there is small section in the Honor the Chapter book, however I am curious has anyone ever used the Exorcised Radical Background package from the Radical's Handbook to create these Space Marines, Everything in the entry explains the Chapters unique resistance to demonic influence and warp exposure and it matches their dour demeanor as it has been describe. Mechanically does anyone think that the package is too overpowered or gives them to much of an advantage or throw off game balance? Does anyone have experience using them as printed?