I know that the system is operational, but I think that it is a bit to early for a system like that to work efficiently. I read somewhere a while ago that the equipment used in the "Land Warrior" breakes down easilly(as allways when you have a lot of stuff, something is bound to brake
). Energy, to power the system is also a problem. It's not a problem in Iraq when you go out on patrols and come back in a couple of hours.
But if you think of a bigger conflict where the soldiers would have to fight for a longer time, maybe even without any supply, then you will quickly run in to problems with lacking energy to power the system.