You may never write with it...but it sure is fun!:
I won't say aything about the pen...its a Space Pen and everyone knows about those. At first grip I didn't like it. It was seriously light and felt odd as a balisong. I was used to standard butterfly knives. I wasn't able to flip it well. It only took a few minutes before I was comfortable flipping it like a pro. Change your grip a bit and you won't have any trouble at all. If you're the kind of person who always has to be messing with something or always carry something in your hand...you'll love this... more info
