"Trackpoint" eh? I have always just referred to it as the nipple. That is actually what it was called on my first laptop - a Toshiba - way back in 1994. At least there was a little bag with 2 replacement tops, referred to as "replacement nipples" in the manual!
So I'm a nipple man, myself
Oh, and it is far better than the fingerslide thingy, btw.
I have no scientific evidence for this whatsoever, other than the fact that I loathe the trackpad.
SD