Yes, playing with my trackpad, the two-finger scrolling works as if it's sending a up/down arrow key every centimetre or so I move. Maybe a two zoned approach will be enough for everyone, where it scrollls just one tick if you only move it up to half way, but sends repeated clicks if you move it all of the way, at perhaps some user definable frequency if no happy solution can be found between all the users with their pyras thus far (and willing to contribute to this thread).
It would probably need two limit values: when it switches to slow speed and when it changes to fast speed. If these are the same number there's an uncomfortable area where the speed would skip erratically due to the noise in the nubs. The principle is simple, but there's some tuning like this to make it feel nice.