Does anyone view Lucian as a non Demacian?
Yes he is technically Demacian, but from his lore it seems more like its in name only. His work takes him all over Runeterra that I get the impression that if he is ever in Demacia, its because his work takes him there. He is also associated with some sort of group that may not exist anymore based off the Bilgewater event where they had some kind of base there. As if he connections are more world wide instead of mainly being with Demacia. Considering he isn't shown associating or working with any of the other Demacians and their general affairs as of now, I think he alignment should be Runeterra/none unless given more reason that because he was born (raised?) there.