Thats pretty cool. Although, I can't understand what they attempt to accomplish, besides spending more money that you're average joe ain't gunna see for another 10 years. I'll explain:
When wearing IBAs, and you get hit, you still bruise, and it is capable of breaking ribs...and that is with the hard armor plate. Now....lets make it paper thin. This increases trauma recieved, thus, still making the soldier a combat casualty if it breaks something(a bone in the leg, ribs, arms, ect), not to mention, the blunt force of having something slam into you(bruising, internal bleeding, lacerations to various organs, stuff like that). Granted, it will reduce combat deaths due to seemingly non-critical injuries(arteries namely), but due to modern medical sciences, that really isn't a problem much anymore(quikclot works wonders).