The kind of knife you carry says a lot about you to a person that knows knives. The aggressive, weapon-like design tells me that the carrier fancies himself some sort of knife fighter and is looking for a reason to stab somebody. Mall-Ninja is a common term for these people.
Now, some people do train in knife combat and are enthusiastic about it. I can appreciate that.
Mostly, though, knives like that just cry mall-ninja, to me.