Trying this out right now with a keyboard and laptop and I'm immediately a fan! I'm pleasantly surprised that Shift works across keyboards.
I really dislike keyboard key layouts, that is the physical staggered location of the keys always feels cramped and inconvenient when our fingers naturally want to splay out. I also am pretty comfortable reaching across the keyboard, or typing one handed, even though I like to stick to the home row. Using two keyboards I notice how much more natural it is to reach across and use the 'wrong' hand for certain keys. But mostly my experience is just what the author said: The relief was almost instant. This feels like the way I'm supposed to have been typing all along.
I'm typing this now with my left hand on my main keyboard and my right hand on my laptop keyboard, which is about two feet away and at an angle. It's surprising how natural it feels to type this way.
I don't have any particular RSI issues, so I probably won't make a habit of it, but it's interesting how my brain doesn't seem to care how far apart my hands are. I'm not even consciously aware of which hand I'm using at any moment.
I really dislike keyboard key layouts, that is the physical staggered location of the keys always feels cramped and inconvenient when our fingers naturally want to splay out. I also am pretty comfortable reaching across the keyboard, or typing one handed, even though I like to stick to the home row. Using two keyboards I notice how much more natural it is to reach across and use the 'wrong' hand for certain keys. But mostly my experience is just what the author said: The relief was almost instant. This feels like the way I'm supposed to have been typing all along.