Depends on the circumstances. Specifically, what I am trying to say is that it isn't the weapon that is dangerous, it's the technique that is dangerous.
Take someone by the shirt collar, and roll and twist them to the ground and they'll be begging God for death during the precious little time it takes for their eyes to bulge, their face and neck to pop bright read, and very quickly passout. It isn't pretty!! My students ALL knew what it feels like to passout. So do I. I actually hate and fear the Hades out of it!!!
Why would I be so graphic, you might ask? It is a good defensive/offensive technique, but potentially deadly! In class and in tournament, we are NOT allowed to execute strangling techniques unless a paramedic/MD/DO is present. Even then, the referees almost always stop the technique as the person's eyes begin to roll-back, because by that point, the person is incapable of tapping-out to "submit".
Unfortunately, there is only one way to teach strangle holds: hands-on. Of the literally dozens and dozens of students that I have taught/shown naked strangles and other choke-out techniques, I doubt any lasted 2 seconds before their eyes rolled back in their heads and they lay there limp. Now, you have to worry about breathing again, blood flow, etc. At the very best, everyone awakes confused and with one Hades of a headache.
Forget the strings and wires. Learn good technique with your own body and learn how to counter such techniques (where weapons are attempted against you or not).
Sorry to be so graphic, but I don't want for people to misbelieve that this is a technique that ever should be toyed with. It just isn't!
Doc2005