I have not found any confirming web documentation on this but I heard there were accidental discharges when users in stressful situations were pulling the trigger and the squeeze cock mechanism at the same time.
Apparently convulsively grasping the entire hand is something easy to do.
It requires a violation of the rule of keeping your finger off the trigger until you are ready to fire.
Squeezing the cocker...cocking the gun...should occur prior to taking the trigger finger off the frame and placing it on the trigger. It should require two distinct decisions