Quoted from CrazyLevi:
Not every sword is a sword of rage!!!
That could well just be his normal afternoon sword.
Yep, he's probably got a sword for every occasion. For instance:
At the dining table: Sword of Steak
In the courtyard: Sword of Landscape
At the gym: Sword of Weights (wanna be really careful taking those on and off)
With the girlfriend: Sword of Chastity
At the movies: Sword of BeQuiet
Playing pinball: Sword of Rage. OK yes he does use it then.