Not only that but to piggyback on the post you are answering, it can be very difficult to access tools in this type of scrum. That spring assisted folding knife may or may not be of much help. You have to put in the work, against real resistance beforehand to find out. I know Jackson can speak to that.
Indeed. I would think one might get a glimpse just by watching the video posted by jdhaines. Its pretty clear he isn't in control of the situation for the majority of the time. He's off balance, usually using both hands just to (barely) minimize the number of stab wounds he's sustaining, and it takes him several seconds to achieve a position where he wouldn't get completely overwhelmed if he tied up one hand to reach for a weapon.