I used to drive motorcycles that had both a center stand (double leg) and side stand installed. I understand the preference for the center stands that have two legs, but I would not use one on a heavily loaded touring bike. Bike frames are not designed for putting that much of a load on that part of the frame to support one wheel up in the air if you are running four panniers with weight on both the front and rear.
I agree with this and would like to use a stand like yours. My Rohloff equipped bike also has disk brakes so there doesn't appear to be room for the rear stand. I have a Click-Stand and it holds my bike up even in high winds.