Charlie has already chimed in.:thumbs_upI was hoping Charlie would chime in on this. He has a lot of extremely useful methods in his segmented turning involving a lot of different equipment. His results prove the usefulness of all of them. You won't go wrong working with him to decide what are the best methods and equipment for you to use.
You can make due without some things, but if you're like me, whatever makes the job easier is worth having.