Once with a Cdn Forces 25 set (Korean War vintage)straped to my back, I went through the ice on snowshoes. It is hard to swim with one of those on your back. I can fully understand your feelings about carrying kit.
Having shared that experience training in Arctic Norway, I have to say it didn't put me off ice cubes in drinks. It just put me off falling into freezing water while carrying my own weight in military kit.