If I were carrying a knife specifically to get through leather jackets, I'd instead want a recurve blade with an aggressive serration pattern like the Spyderco Civilian or the CS Black Talon. The primary advantage of the American tanto is point strength.
Definitely not if it was a folder. A fixed blade, maybe, but I simply wouldn't want to use it for utility purposes. The knuckle duster bit would get in the way far more than it would help me cut things. In a fight, though, it wouldn't be my first choice; I can only see the practicality of it as a guard and nothing more.
Either way, the handle on the knife in the image looks more uncomfortable than leaving my girlfriend alone in a room with Bill Cosby.
I think the knife in question would be uncomfortable just to carry, let alone use, and that would stop me using it for sure.
The Civilian makes sense. I'd also suggest the Matriarch but from what I hear, the point would like snap off in such a fight.

