If you responded to an incident in a remote tract of your park, and had to flee on foot, could you make it through the night in your uniform? There is no question that I have enough clothing with me in the truck; I could make out pretty well in any weather we are likely to experience in my area. I wouldn't like it, but I could do it.
But that's not the poiint - the question is, could I make it wearing only what I would likely be wearing when I was responding to the call? At the moment, it is dark, 41 degrees, and there is a light rain, mixed with sleet. The ground is muddy and everything is wet. It would be uncomfortable, at the minimum. Two days ago, it was eighteen degrees and blowing, and the conditions were well into the life threatening realm.
Think about this the next time you are on patrol. Don't just wear enough to be comfortable - wear enough to survive.