Un début de réponse ?

What is a Tactical Knife?  Every Company seems to make them.  Everyone seems to carry them.  Or do they?

Well, first let me say this:  I’ve heard some people (Knifemakers/Knife Companies) say the following, that there’s no difference between a “regular” knife and a “Tactical Knife.”  I ask them this question: Is there a difference between a “Combat Handgun” and a “regular” hand gun?  Damn right there is.  But unless you know what those differences are, you probably can’t tell the difference.  It has a barrel, a handle and it shoots, just like every other gun.  However, there are differences and to the educated or experienced, these subtleties can literally spell the difference between life and death.  There is also a difference between a “Tactical Knife” and a “regular” knife.  Let’s take a look.

-- La suite et source: http://www.humanevents.com/2011/02/01/10-things-that-make-a-tactical-knife/