This is an sword from a character I absolutely adore in an anime/manga called Soul Eater. I personally adore the aesthetics of this weapon and think it'd be a nice addition.

This has been modeled before on some forum site, but I can find no way of retrieving the model, but the artist did post pictures. All credit to original artist:
http://forums.3dtotal.com/attachment.php?attachmentid=149009&d=1257947300
(Here is his profile page, if you want to look into that http://forums.3dtotal.com/member.php?u=686)

http://static.zerochan.net/Crona.full.842018.jpg - a good reference

http://i32.mangareader.net/soul-eater/4/soul-eater-1853847.jpg And a page from the manga

I hope that's enough, but if you think you need more references feel free to ask. I would love to see this sword made, but I lack the talent and experience to do it any justice.