I still think the way a 17 ounces handgun is shaped makes it way more unconfortable to carry in a way that is concealed with your jacket off. It will print through a wool shirt, while even a fairly big knife will print, but a lot less.
I don't often carry a 10" hollow handle, as the handle is not optimized for a low outside print, but it can be done easily when you want to keep boredom at bay...
The issue is not that a handgun is better for self-defense, but I notice no one advocating carrying a handgun also advocates wearing a bulletproof vest, even though the vest is less trouble and makes a lot more sense... Also, outside the US, where I am, carrying a handgun is way more potential trouble than it is worth.
Quite frankly, I have trouble imagining a practical-minded American like Andy Rooney carrying a handgun: I think he would wear a vest first...
In Russia I notice many people carry handguns, even rifles, for defense, but they are usually kept in the vehicle and never carried about on the person... On the person is really a step beyond, even for Russians...
The problem with carrying handguns on the person is not that it is stupid per see, but that it looks stupid... Carrying a huge hollow handle concealed I agree may also look stupid, but that I do for fun... I actually carry other styles of fixed blades when I feel like it, and even if people around me were to know, they would not be as shocked as they would be by an actual handgun...
As for the comment that if people had carried handguns in Paris they would have survived better, maybe indeed they would, but it wouldn't be Paris anymore, and I'm sure they would all rather keep their city the way it is...
Gaston