Excited to hear they will have a mode with trackballesque momentum. If the back paddles were also capacitive they could emulate the trackball through both sides design that sounded pretty great for continuous movement.
As someone point out in the comments, repeatedly rubbing your fingertips across a surface, often at high speeds, for long periods of time does not sound very nice for your fingertips. [Controller usage in gaming is very different than typical app pointer control usage, so the use of touchpads for laptops isn't really comparable.]
The handles that "curve up ... leading to greater accuracy" also sound very uncomfortable; I'm not sure "greater accuracy" is worth long-term discomfort ...
I really wonder what their testing regime is like.
