Elder Mythos Cultist and Hidden Priest; Compatible or Incompatible?

[Xuldarinar]

Strictly as a matter of curiosity; Are these two archetypes compatible?

Elder Mythos Cultist requires one to select one domain from a select list while eschewing the other, while hidden priest strictly replaces 1 1st level ability from a domain and 1 8th level ability.

[Rysky]

Hmm, I'd allow it. Nice match up.

From a more stricter rules perspective ehhh, that's walking on a fine line...