I recently learned about the Wooting two HE, a keyboard with analog input. The interesting feature is something they call "rapid trigger", which defines the actuation point as when the key changes direction (up or down), rather than the key reaching a specific height.

I'm wondering how much faster this could let someone press or release a key. I tried searching online but I can't find anyone who has measured the average time for typists to reach the actuation point, or even the average velocity of a key-press.