If I kill somebody in self defense using a revolver or pistol, I am covered by my CCW. A knife, sword, asp baton, etc., used to kill in self defense...is not covered by CCW and you will go to jail even if you are the "quote and quote" good guy.
Not true. Your CCW gives you permission to carry the firearm, not to shoot it. The self-defense exception to your state's homicide statute shields you from criminal prosecution for homicide, if, in using deadly force, you meet whatever terms are required for that exception to apply in your case. That's true whether you used a legally-carried firearm... or a big rock.
This is a crucial distinction. Understanding it and all of it's applications will be critical to keeping you out of prison if you are ever required to use deadly force to protect your life.
Also note that, in many states, no permit is required to carry a concealed knife. Assuming that your knife, and the manner in which you carry it, conform to the laws in your state/city/wherever you are, you're just a covered, for the purposes of carrying it, as you are with your revolver and CCW permit.
The laws that govern your use of either weapon against a human being are entirely separate for the laws that govern having the weapon on your person. To be legally armed, regardless of the weapon, you have to follow one set of laws. To be legally justified in using deadly force, you must
also follow the other ones. You may be able to legally defend yourself with an illegally-carried weapon, but you would then still be subject to prosecution for breaking the weapons law. At least in theory. In reality, it's unlikely to work in your favor. It may also be the case that using that illegal weapon to defend yourself would be homicide incident to the commission of another crime (carrying the weapon.) That would negate your self-defense exception, and subject you to additional penalties above and beyond the homicide itself.
This may sound like nitpicking. It isn't. It's the difference between freedom and life in prison. Carry only legal weapons, carry them only legally, and use them only when a) you have no other choice and b) it's legally justified for you to do so. If you don't cover all of the bases, you'll lose everything.
"I'd rather be judged by 12 than carried by 6" is chest-thumping nonsense. Both will effectively end your life as you've known it. And by following the laws that apply wherever you are, you can avoid both.
Stay alive
and stay out of prison, because the alternatives all suck.
--Shannon