Done! Sounds intriguing.
The things that save me the most space on stage are these little string swing holders that attach to the amp cab, eliminating the need for guitar stands. I always bring a backup bass, so I have one for each side of the cab.
However, in order to be tall enough to work, you either have to have a couple cabs stacked or a tall enough/adjustable amp stand to keep your instruments up off the floor. Unless you bring a pad or something to put on the floor and use the string swings just to keep the instruments from falling over.
My goal is to be able to make one trip from the car with all my gear. 2 basses, one micro head, one light 212 cab, one multi effects/dI/tuner pedal, plus cables, extension cords, tape, etc. And then I'd like it to stay all organized together on stage with me so I can keep an eye on it in one spot and not worry about a part of it getting separated and going missing.
I'm close now with my cab in one hand, double gig bag on my back, and a backpack & amp stand in the other hand. If my gig bag had bigger/more accessory pockets so I could eliminate the backpack, it would be easier.