Largely (as with the disclosure of 06-May-2019) for the record.
The target remains a wearable quadcopter that ideally can be steered by weight-shift ~ this being the simplest possible implementation of the various parts of the assembly.
Nonetheless these two outlines provide a means of supporting the weight of the airframe and batteries on the ground, and of the operator in flight in lieu of a crotch-strap.
Note that in either case the integrity of the 'drone' is preserved, its aperture still slipped around the waist and its bulk supported by shoulder-straps to leave the operator free to perambulate.
Difference is in this event said operator can step into the above frame (not unlike a Zimmer) and attach the flying section to this ground section prior to take-off... having connected the (greater) volume of batteries supported by the latter.
With the disclosure of two days ago, ditto excepting that the operator first dons the quadcopter and is afterward seated on the chair prior to attaching both it and the batteries supported beneath its seat.
Going forward then and given the current state of the art as regards electrical storage I envisage a short-duration flight wearing the drone itself and a limited battery-pack in the form of webbing, whilst the stand-up frame above allows for more batteries and a longer flight duration.
Finally the chair provides the greatest bulk for electrical storage and the longest flights.
There is of course a trade-off in so far as the frames themselves (at least in alloy instead of carbon fibre) might four or five kilos of extra weight, as do the larger batteries themselves.
Nonetheless this is a trade-off (fuel versus payload) that has existed since the dawn of flight.