This is awesome news Michael - I can't wait to try this out.

Just last night at the store I took a look at some of the new P&G fabric softener bottles:


http://www.packagingnews.co.uk/design/world-design-procter-gamble-fabric-softener/



http://popsop.com/2651

There seemed to be four or five brand names with the same bottle. I was wondering if this shape was formed by Sub-D or maybe by a hand-carved clay sculpture by industry artisans.

I'm not sure that a twist deformation of the nature that you are presenting was what formed this bottle, but I find it interesting that it gave me pause to consider last night.

Would you consider any sub-control elements such as a positional start and end to the twist deformations (perhaps defined by the inference on where the start and end twist-axis definition is made)?
And also, perhaps a logarithmic or varied control over the angular degree through the body of the twist - where an object set could start slowly on the twist, then accelerate to a more acute twist?

But none the less, this is great news! And it looks so smooth too. This will surely streamline a lot of procedural work in things like turbine blades and ornamental decoration.