Let's talk about THAT cutscene from the main story (spoilers)

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just as a quick sidebar:

correct me if i'm wrong but the first reference to "Doma" in the FF series was in Final Fantasy 6. This is where Cyan was from and he was a Samurai.

http://finalfantasy.wikia.com/wiki/Cyan_Garamonde

Since this game seems to draw references like this from previous FFs, it stands to reason that Doma in ffxiv will follow suit with the "far east" style classes and content.

In FFXI, they called Aht Urgan, the far eastern land as well. But they are like middle eastern, with a mix of Indian culture.

I have no doubt SAM can be part of the guild in Doma.