I think people who commit to this line of work commit to the use of whatever tool at their disposal, and that, to that kind of mind, occult tools are no different than any other. So, yes, these things are definitely used, but I don't think from any originating belief in anything but their usefulness in certain areas. I mean, hell, even Winston Churchill made use of occult cells throughout Europe, because they for the most part had already established a cellular, discrete (not discreet, though that too), veiled-identity communication system similar to small intelligence cells.