Pocket clip.
I don't want a flashlight secured to my hand that a suspect can grab and use to control my arm.
Which is true of any weapon that is not empty hands. Once a person introduces a weapon into a fight, they do several things at once.
First, they create a liability which must now be defended. That is, a screwdriver, knife, flashlight, gun, etc, can be used by the assailant as well as by the person defending themselves against aggression. The aggressor will try to take it away and use it against the defender. The defender now must not only defend themselves, but the weapon.
Second, hand-held weapons in general (not always and in all ways, but quite often) disable the hand hand holding the weapon in terms of using it to do other things. You have taken what is for most of us the free use of two hands, and tied one of them behind your back, figuratively speaking.
Third, when a weapon is introduced, the chances that it will be employed for its intended purpose go up exponentially. If needed to defend against deadly force, of course, this is understandable. If, however, it is introduced as a magic wand, which so many people think it is, it has increased the chances that it will be used, and perhaps not in a way that serves the interests of the person defending themselves. It is a bell that is hard to unring. Draw a pistol, and you are now in a gunfight - like it or not.
I'm not against weapons. I think most people don't know enough about how to use them correctly or effectively to carry them, and I include myself in that category. I don't train with knives, unlike some true experts we have here on MT (I mean that with great respect, not being snarky). I am more likely to have a knife taken from me and used to cut or stab me than to use it effectively or well, or even legally. The same is true of people who carry guns. Booger-eatin' morons, for the most part, based on my experiences. Some of them I've run into at the range are so dangerous that when they appear, I leave because their lack of understanding of even basic safety terrifies me.
Yes, I know there are experts who train often and well and are in fact experts with their weapons. I'm not one of them and chances are quite high most of the rest of us are not either. There are better ways to kill yourself than by whipping out a tactical something-or-other and having it taken away and jammed up your jaxie. My 2 cents.