The "Americanized" Tanto is one hell of a "fad" at 20 plus years old!
As for "Defensive Use," two areas to consider.
Don't listen to people that tell you that you are doomed.
Don't listen to people that tell you that you are
not doomed.
That applies to calling 911, running away, giving the person the money they are robbing you for, laying down and allowing them to violate you, breaking into your house, carjacking you, sticks, batons, pepper spray, chains, thrown cats, protection K-9s, knives, swords, and every type of gun you can imagine.
I think that in order to defend yourself with a knife, that is a far more simple endeavor that to learn to "Knifefight," which does take some instruction. Alot of people that receive instruction don't even practice drawing their weapon, which means they are going to croak. Getting the weapon out fluidly is the number one skill you can acquire before you even seek out instruction in actually using it.
This is all about options and "insurance," there are no guarantees no matter what you do or what you carry or how skilled you are with it, you might die anyway.
Some people don't like the idea of knives for Self-defense, they are entitled to their opinion, it is not one I agree with, however.
Have a nice day.
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"You are no more armed because you are wearing a pistol than you are a musician because you own a guitar." ~Jeff Cooper
And the same goes for a knife...
And, I'm a Usual Suspect.