In a word, no.
I have not “been in” or served like the commenters on AM’s excellent blog. I have however, walked, hiked, run, and trudged literally thousands of miles over rough terrain, in all kinds of weather and seasons, with and without piles of extra cool gear hanging off my person.
In doing so I have discovered that the lighter your load, the better the experience. Simple as that. I assume this applies to a fighting load out as well.