You could make it work but would be a nightmare ballancing the pulse to get half way. Heck the coils barely have enough pull to turn the wheels standing still but more than enough at speed.
With the motor one its should has almost a linear travel vs pulses. The motor give you 1/3 of a servo. A feedback and ballance electronics ar the other 2/3.
Heck try it! its a simple test. It may just work!
Good Luck!