Amrita : 2-way functionality for forms?

Are there any plans for Amrita to support 2-way interaction:
Ruby model (hashes, sequences, objects, etc.)
–> (some kind of user editing of HTML e.g. forms, fields)
–> updated Ruby model

The w3c new Xforms is far uglier than Amrita for the forward path (using XML
instead of a Ruby model), but one of its big wins is that it does the
reverse just fine (you get valid XML back after user editing).

Or is there some entirely different and better way to approach this?