Simple Q&A Pathfinder (By RAW) I

[Stone Heart]

Q155: Can a cleric choose both a domain AND one of it's sub domains as its 2 domains?

A155: I am fairly certain you can't as the subdomain is still the same domain, just replacing parts of it. It seems to me like an archetype, which replaces class features, but you are still a Cleric or a fighter, just a Crusader or an Archer.