Yeah, in my mind it's you-es-ian. Which doesn't seem particularly awkward or hard to say to me (but maybe a strange until you're used to it).
It just seemed a natural term to me. I promise I wasn't using it to avoid a controversy (which I'm not even aware of!). In my experience with spanish speakers, they'll usually just say "gringos" (not as a derogatory term), but they'll also happily use "americanos" -- and don't seem to have any problem w/ it. (Tho Spanish it is literally an ambiguous word; you have to deduce from context whether it means from the USA or from the continent.)
It just seemed a natural term to me. I promise I wasn't using it to avoid a controversy (which I'm not even aware of!). In my experience with spanish speakers, they'll usually just say "gringos" (not as a derogatory term), but they'll also happily use "americanos" -- and don't seem to have any problem w/ it. (Tho Spanish it is literally an ambiguous word; you have to deduce from context whether it means from the USA or from the continent.)