Well, for radius arms, ladder bars, panhard bars, fence pipe, etc. it would be great. When the piece needs bending, well, that is a whole 'nother story.
I would think it would be easy to setup. Get an old lathe chuck or something to clamp the tube in, spin it with a stepper with some gear reduction, and plug it in as your "Y" axis.
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
"If the women don't find you handsome, they should at least find you handy"
-RedGreen show.