I have to disagree with "Trackpoint being inferior (e.g. to mouse and the clumsy trackpad)" although I know this can be the point of view of all who are not used to using a Trackpoint. I am a believer of the home-row philosophy of this design, and there are a few points to add for the Trackpoint and M13.
1. Trackpoint is not designed for gaming, but for tasks that require switching between typing and using the cursors, e.g. in office document spreadsheet work, data analyses, i.e. tasks using related to work. For gaming, high resolution (or high res + PS/2) mouse is the champ.
2. Trackpoint is faster in completing those tasks by requiring < 50% of the time compared to when one uses a mouse. This is because Trackpoint is designed with the "home row" philosophy and the user does not need to make excessive movements to leave the home row of the keyboard to reach the pointing device.
I think there are usability studies on this Trackpoint, but here's a quick video demonstration of comparing the effectiveness of using a Trackpoint vs using a mouse on a set of common computer tasks:
3. The generation II Trackpoint on this M13 is a bit sluggish and hard to push. One has to adjust it with the mouse sensitivity and mouse speed settings in the computer system. And I think the ThinkPad laptops later were equipped with generation IV (or V?) Trackpoint design which is softer to use and is much more sensitive and there are device drivers specially for the Trackpoint to adjust specific characteristics of the Trackpoint to the liking of the user.
However, my daily driver now is a HHKB plus a Trackball.
I think I miss the Trackpoint but having worked with a setting with Trackpoint 8-10 hours a day, 6+ days a week for years gave me numbness at the finger tip and switching between index finger and middle finger did not help so much.
Apart from that, the nicer Trackpoints are on those keyboards with chiclet switches, and I cannot like those keyboards to much any more, with my experience on nice linear switches and nice tactile switches.
This is a totally different experience in terms of switches as this prototype uses MX switches, but it may deliver much better Trackpoint experience:

(I don't like its "floating key" design exposing the sides of the switches though)