Another simple idea.  Provides all the bodily supports used in the LiftWalker, plus upper trunk and even the head.  This harness can be attached to an engine hoist, the rafters, a doorway, suspended over a treadmill, etc.  Can be adapted to systems such as LiteGait.  Superior body support without any suffocating pressure on the abdomen or diaphragm. The idea is to offer a versatile way to start where you are, use what you have, and do what you can.