And note some of the features were tweaked, but still can be swapped out, like a barbarian's danger sense--it counts as 'trap sense' for anything, including getting tossed out for an archetype.
Also, don't forgot that the summoner can't take archetypes that modify the eidolon's base form or type, which is namely just the two Wild Callers, the First Worlder, and the Shaitan Binder.
You also can't take Barbarian archetype which tweak rage like the Urban Barbarian
