Problems with American Kenpo knife techniques

One of the biggest problems, in my view, with the American kenpo knife techniques (i.e., Glancing Lance, Thrusting Lance, Entwined Lance, Raining Lance, Piercing Lance) is the length of the techniques. The reality is that the longer you "stay in the pocket" when someone has a knife, the greater the odds of being severely hurt. In other words, while it is highly likely you will be cut if you have to defend yourself against a knife regardless of how fast you are or how quickly you disengage, the longer the duration of your technique, the higher the probability that you will be cut more and severely hurt.