> This allows the keyboard to be operated without looking, much like how most people use a ordinary keyboard today once they are past the hunt-and-peck stage.

'Most people'? I must have had really bad luck in a number of financial/tech companies, as a disturbing majority don't touch type.

Note, my experience is with people aged 30-50. It's possible that this doesn't apply to millennials, but they certainly aren't the majority still.