[Somehow, I get the feeling that this wouldn't be much of a match against a sword] [1] [2]
Despite some mistakes [3], the calligraphy I've done so far has been good enough that I was given a glass pen in appreciation.
Dubious about it actually being a pen, I tried it. It worked. It holds on to enough ink to get a few words down before needing to reload it. It's perhaps the coolest pen I've ever owned.
[1] /boston/2007/09/10/thumb.glass.pen.jpg