Re: Personal body space
Umm, ok, leaving the snarkiness out, which was more intended as a joke than snarkiness anyway, wearing any armor is going to change the distribution of body weight and space. Unless your armor is as tight as lycra, you're automatically making your body bigger and heavier just by wearing armor.
Yet, football players and hockey players are more than capable of operating at peak performance despite hauling around lots of extra weight.
Your trailer analogy falls flat because, with adequate training, you can drive with a trailer just as well as without. Granted, you probably can't go offroading with a trailer, but, that's not because of driver skill but a limitation of the machine itself.
And that's the whole point in a nutshell. Yes, adding armor spikes is going to change how the armor is worn. No one disagrees with that. However, with training, you can overcome that fairly minor change from wearing un-spiked armor.
Armor spikes add very, very little weight to the armor and you're only talking about maybe two or three inches of personal space. People can learn to adjust to that fairly easily. Heck, look at the crap you lug around in the armed forces. Web belts alone add a couple of inches to either side of you. Your backpack adds almost a foot to your thickness (and quite possibly more). Yet soldiers are expected to operate in many environments carrying all of this.