This also applies to less-cerebral tasks. For example, I didn't learn to touch-type due to a school class with edutainment software, but because after one summer of arguing with people over dial-up, I had learned it just to get the words out faster.
MSN messenger in my case haha
Because I was rapidly going back and forth between the keyboard and mouse, it resulted in an unusual style where I use the outline of the keyboard for hand placement, and attempting to use the home row slows me down significantly.
Tribes in particular also had a voice-tree, and while it was shorter than prose it still encouraged a certain degree of touch-typing.
For example, typing VSAF (mnemonically [start][self][attack][flag]) led to text and prerecorded audio for "I will attack the enemy flag." Little of it survives now beyond references like VGZ for "Shazbot!"