- It has much fewer keys and uses modifiers to get the other keys of a standard keyboard; that means less finger, hand, wrist, and arm movement.
- It has an integrated trackball for mousing; that saves all that reaching for a mouse or other desktop pointing device.
- It has tactile feedback, which I expect is the reason I have so much trouble typing on my LP.
- It has a more ergonomic arm and wrist position.
It's not as bad as I feared. Development of alternative two-handed keyboards has not stagnated - not totally, anyway.