I will not buy it even for $1,500.
It gives a lot of freedom to the arms, but keeps you rigid, caught by the waist. You can only walk, run, turn, jump, bend a little, straife, duck and sit down; you can not lean on the floor, for example. In addition, in the normal version, when you walk you would hung inclined and it's unnatural.
But maybe it's just a matter of getting used to it.