Summon Eidolon spell question

[Mitefellow]

Hi all,

I'm in the process of building a summoner eidolon, and I know augmented summoning feat doesn't apply unless you summon it via Summon Eidolon
Now my question comes in that I'm playing a Synthesist summoner archetype, so I am curious to how the spell would apply in such a case. If I were to summon it that way would I still synthesize with it or how does it work?

Thank you for any insight!

[Taenia]

Your eidolon is still an eidolon by the rules so you could summon your "eidolon suit" with the spell. You would gain the benefits of the feat but you would be considered a summon creature for the purpose of protection from alignment spells.