I will just say that reading Occult Adventures did not inspire me to create characters of any of those new classes...
...but I was inspired to compose house rules about how to create the mood of the literary genre about "occult detectives" who investigate and deal with creatures and cultists that have strange paranormal powers and dangerous esoteric knowledge.
Enjoy! Happy Halloween!
p.s. - please discuss these house rules here instead of in this playtest part of the forum.