You're going to build one? How would you do that? It sounds difficult!
Eol to me is very Byronic, a magnetic kind of person, deadly attractive and kind of dark in appearance. I think he just has to be like this to entrap 'the laydeez'
Plus there is his secretive nature. Think Mr Rochester, Heathcliff, that kinda guy. It sounds to me that his sword is made of some kind of metal of meteoric extraction and I imagine he wears a helmet that's low on the brow.
Make sure you post a pic when done - Eol is one of my favourites.
Have you got any of the book-related figures such as Lobelia or Bullroarer Took? The GW range is pretty good for book-Hobbits.