That is an issue. The thing I like about it is you can have variable segments in a ring with minor adjustments which if I understand the stomper system cant be done so easily. If you are low production like me tying up the lathe is of little consequence and its pretty easy to take the work off the lathe and put it back if need be.
In case anyone is curious. Im glad this software will work for any system you care to use, Id have a heck of a time planning out a good vessel without it.