I would be interested to see how this compares to using a characorder, which is similar in concept but the switches are different. I feel like this would be a little easier to press.
fwiw, if any one is wondering, this or a cc would by far be the best single key entry typing experience you can get as far as comfort goes. the lack of wrist movement is incredible, your hands basically don't move all day. its much easier to stay in the zone when you don't have to worry about where your hands are, not having to reach for shortcuts, not having worry so much about keybinds or key placement because you can reach everything you need with ease.
most of these keyboards and layouts all just minimize wrist/finger movement for the most part, which this cuts down to nothing with any keyboard layout