Hmmm, sorry LMP. It would be rather interesting for the Dark Queen to be an evil Maia or at least a Maia that likes battle and bloodshed a little too much.
I don't know if the Maia in her would be considered a true evil considering Esgallhugwen hasn't killed any of her companions yet, she's only gone after the bad guys, of course she could be trying to destroy the Mouth of Sauron before she deals with them.
So, since the Elves live in two realms at once they would be attacking things that the humans wouldn't be able to see, (that might be funny, watching someone swinging at nothing) and if thats also the case then Eswen will be able to see Lira fighting off the
invisible evils in the spirit world.
I don't know if this is right I'm sort of taking it from the books and the *gulp* movies (please don't throw rocks at me

) But when Frodo percieved the Ringwraiths he saw these decrepid old men who were white and glowy;the white Kings I believe he called them, now from what I remember, or think I remember, his vision was smeared and blurred sort of dreamlike, but since these are Elves we're talking about maybe their vision might be clearer.
One last thing before I stop blabbing, since I've sort of been going on and on. When the Elves see through the MS's facade, I'm assuming he'll be wearing a cloak just for an example, he is not going to be a very pretty boy, try to keep from spilling your lembas girls.