Get access to an Inquisition while maintaining full BAB?

[Covert Operator]

On the Inqusitions page, it says that anyone who can pick a domain can choose an inquisition instead. This means Cleric, Druid, and Inquisitor.

There are two other ways of getting a domain without class levels that I know of:
Believer's Boon, which only works for powers usable 3+wis per day (which inquisitions are not)
Cleric Variant Multiclass, which only gives the first-level granted power. Most inquisitions only grant abilities at first level and have no progression, so that doesn't really make sense.

[JiaYou]

Reformation Inquisition (and a few others) gives you Wisdom to several face skills, Chivalry gives you a cavalier mount. Chivalry scales so that'd be quite useful for what is easier to access than the feat chain for an animal companion no?

[Feral]

There’s a couple paladin archetypes that grant access to a domain and thus an inquisition.

[Covert Operator]

Thanks!

[MrCharisma]

I'm new this class, so it may not work, buut ...

Class: OCCULTIST

Archetype: RELIQUARIAN grants you a domain (and makes you a divine spell-caster).

Panoply: TRAPPINGS OF THE WARRIOR. So you'd have to choose Transmutation and Abjuration implements, then you can choose Trappings of the Warrior in place of an implement.

I'm not 100% sure you can choose Trappings as a Relequarian, but I just skimmed it and it seemed ok. As I said I'm new to the Occultist class, so I could be wrong.