Trying to get in topic again
without sounding too repetitive.
About the shaky cam: I don't think its purpose can purely be reduced to mirroring documentary footage or amateur style filmmaking. If used correctly, it can convey fellings of action and dynamism in my opinion. That's why I think it has been used effectively in the chase scene.
But there is one problem.
Using the hand held camera ALSO during the beginning, during the establishing of the story, makes the chase appear less powerful. I think the chase would have worked best if the beginning was shot with a tripod, a still camera. I think that the contrast between stillness at the beginning and the action of hand held camera later would have made the overrall video a bit better. It may seem like a very simplistic advice, but, if you think about it, it literally costs 0 effort and has a great impact in the finished product.