I have compressed ulnar nerve issues in my right arm (causing my pinky and ring finger to be inflamed, weak, hot/cold sensations, spasms sometimes, etc.), so the best typing position for me is with my arms straight.
One nice advantage of having it strapped to your body is that you can bend your knees sometimes and turn/step around a bit while you’re typing. You aren’t pinned to your desk as much.
I use a climbing harness, which is the red straps:
I connect it to the keyboard with a simple strap in the centre blank area of the Kinesis Advantage, allowing my arms to rest comfortably while typing or by my side while thinking and reading.
I also have attached a Logitech trackball mouse by my side so that I can mouse comfortably too; with very little movement to use it.
My screen is simply my laptop on a box on some drawers. I tend to move around the house when I work, but this is my favourite position for typing and programming.
I’ll tend to sit down on the sofa or bed if I’m reading something and not doing much typing.
Setup time is about 20 seconds. You just have to lift the harness on and strap it on at a comfortable position.