Both the USMC and USA vest are ridiculously over-sized. I'm been humping the MTV in country for three months now and I hate the thing. Like cavguy said, it's good for convoy work because of the extra protection, but I can barely move in it on a foot patrol. The answer is give plate carriers to those who dismount a lot and vests to those who do not. Guys like me, on a MTT team where I do both, may need both. What I wouldn't give to be able to wear a plate carrier on a patrol.