In fact, from that experience I've developed a perverse love of the Summit-Dana Bandit controller and its language peculiarities.
Stepper motors are stepper motors, assuming it's actually a stepper motor and not a servo or something. The fact is, a quick count of the leads and knowledge of which go to which phase, and you can hook them up to any controller.
Of course, everything I do anymore circles around working with electromotive equipment.
Bottom line, I agree with Doc's assessment of monitary value, but not utility. If terms like 5-phase and unipolar don't make your eyes glaze over, manuals the size of an encyclopedia volume make you go tingly, and you have way too much time on your hands, you can do fun things with that.