Running 'techniques' are dubious IMO as they can be biomechanically inefficient for some individuals. And when you get tired, you always revert to your preferred running style anyway.
There are modifications all runners should experiment with like stride length, stride rate, upper body position, hip extension etc but these are all natural stages of the running / gait cycle.
If you had to run from danger would you do it Chi or Pose style..? Keep it natural to avoid injury.