Not a new concept, LBT, Crye and a couple of others have been making stuff like that for at least 3-4 years (probably far longer for sneaky types). The problem with armour carriers vs webbing is that a properly adjusted PLCE belt would sit on your hips and the yoke took the other part of the weight, whereas Osprey etc hangs all that weight of armour and ammo/med kit/water/food/whatever else on your shoulders.
I've not tried any system like this myself to comment, but from what I've heard it has been used a fair bit in afghan by certain types who did benefit from not having so much weight hanging purely from their shoulders for greatly extended periods. I know from the shorts amount of time I've had to wear ECBA that it rubbed the sides of my neck absolutely raw in quite little time given the poor fitment, felt bloody awful and I wasn't in combat or anything even close.
