The Valkyrie name has been around for a while now. It was first manufactured in 1996, and I like it. A Valkyrie is from Norse mythology. She is a female figure that decides who lives and dies on the battle field. I think the name does a good job of combining aggressive warrior themes with stylish abstract notions of spirits, mythology, and beauty. I'm a fan of the name.
Good to know about the reasoning behind the F6C name though. I guess that is the technical name while Valkyrie is the street name.