Ted demonstrated that at the NPUC (New Paradigms for Using Computers) workshop that he hosted at IBM Almaden Research Center in the 90's, running on OS/2 at the time.
You're right: "modern" desktop software has no idea how to handle two pointing devices, so the gui and apps would have to be redesigned from the ground up to really take advantage of two trackpoints.
It's a shame it never took off (and that IBM didn't rewrite OS/2 from the ground up to support multiple input devices ;). You can imagine what the multi-trackpoint would be called, given that a single trackpoint is called the "keyboard clit".
You're right: "modern" desktop software has no idea how to handle two pointing devices, so the gui and apps would have to be redesigned from the ground up to really take advantage of two trackpoints.
It's a shame it never took off (and that IBM didn't rewrite OS/2 from the ground up to support multiple input devices ;). You can imagine what the multi-trackpoint would be called, given that a single trackpoint is called the "keyboard clit".