If you get a chance to take a lesson from Michael Fortune, do it. His forte is building with bent solid and laminate wood. I bought a DVD from him a few years back and although it's informative, I think it would almost be useless if I hadn't seen him live first.
You tread made me look at vacuum press systems. Not only can these veneer a flat or curved piece but you can laminate your own curved piece of plywood to your homemade form using luan or more thin forming type plywoods. Althoug a captial inverstment this has a lot of uses over steam bending. Hot pipe bending is for pieces that do not need to conform exactly to a mold for 3/8" or less from what I seen.