All knives are dangerous when used correctly, and, your Boker is a fine utility blade. That said, it was not designed for fighting so deployment will always be slow. A little WD 40 may help, but, over time the simple action of opening it on a regular basis will take care of any sticking points. All knives are dangerous in skilled hands and death traps for amateurs. The best defense for a knife is not be there for a knife fight. period.
Take a few minutes and read the links:
Blades are a lot like firearms, everyone has their favorites, but, if you are determined to rely on a knife and willing to learn how to use it, I would go to Walmart and buy a Spyderco. For under 50 dollars you can get a good serviceable blade. A knife, just like a gun, has to be secure on your body, your carry method will determine if you use it for defense or it is used against you.
KNOW YOUR LOCAL LAWS CONCERNING CONCEALED CARRY AND BLADE LENGTH.
I have include some suggestions for the future: