by evilpixie87 » Sat Sep 30, 2017 2:53 pm
Ultimate Magic, p.41 - "While a cleric or other domain-using class can select an inquisition in place of a domain (if appropriate to the character’s deity), inquisitions do not grant domain spell slots or domain spells, and therefore are much weaker choices for those classes."
To select a domain, one must have selected BOTH a deity (even if that choice is NONE) AND an alignment. One this is done, and domain slots have been filled, the option to take an inquisition disappears.