Yeah.....I have heard the one about the angled blade and upward thrusts.
Considering that it is a double edged knife with a symmetrical handle profile, in the heat of hand to hand difference of opinion, there is every chance the blade is going to be wrongly aligned (ie, the offset is going to be downwards).
If there was a real advantage in an angled blade, there is a similar disadvantage if the incorrect alignment is selected .
A strike from under the ribcage with a straight blade should, automatically be at a sufficient upward angle for the purpose, anyway.
Frankly, the theory is about as good as the one about blood grooves.
------------------
Brian W E
ICQ #21525343
Money : spend it before it's all gone