Here is what I think about finger locking techniques. Check it out on our blog at:
The Instinctive Edge
The Instinctive Edge
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Hey Drop Bear, I personally reserve fingers for breaking. Not any kind of pain compliance or trying to use them as a lock. When the adrenaline is flowing I think most people will not comply with finger locks. So my opinion is if you are in a violent situation just break the finger and move to a more solid control position such as an armbar, armwrap with leg destructions in place or some thing more structural.
I think it would depend on the situation. If someone is finger locking me I am probably going down the pipe to deliver some hellacious elbows at him as my finger is being broken. To attempt escape maybe if he has a knife in his other hand. I would not actively look for a finger to break it but if I got ahold of one, snap then forward on to control. If I broke the finger and it was warranted that I escape at that point, ie. weapon, multiple people, working on a time crunch, etc. then I would.
I would tend to use the finger lock to break a grip in a hold as a precursor to a more secure hold or a strike. If the person is sweaty the finger might slip out and if you don't have any backup plan then you may be in trouble.