A rare case, and one of the reasons Saber is so awesome (i still like Signum better than her, tough).
And yeah, Signum is pretty screwed with writers like these ones who stripped her from her gallant sword and equiped her with hideous oversized stuff xDU Gosh i hate the AEC-Equipements and Kurogin for coming up with these lame designed weapons xDU
Yea, that's the idea. After you beat the game, you can take your stronger characters into higher difficulties (Normal, Nightmare, Hell, and Inferno). The later ones have random bullshit monsters that will worf your characters for no god damned reason. Thus if you make a character named Signum, it'll be perfect!