what if you cut yourself?
I'd rather not cut myself practicing or get a practice thingy, not to mention I'm never going to actually get a real butterfly knife. I have no use for it. I just like the flipping. And the pen part is an added bonus.
If you just like flipping, then get a practice one. You don't have enough weight with the pen to do anything cool like rollovers or aerials.
I'm getting a butterfly knife pen :D
I'd rather have something functional, a practice one is just practice for a real blade, it's not like I would just carry that around with me. It doesn't do anything other than look like a knife. I'd rather have something I'm going to use.
I flip with a practice blade and I have no plans for getting a functional butterfly knife.
Wuss.