Last week I've released gogo. It only has the form handling component and does not show how to set up the app completely, but the form handling alone should showcase the efficiency of the approach. Server-side validation is not without it's downsides, however for the prototyping phase nothing could beat speed and consistency and both are provided.
Not all of the dabdab forms are handled this way, however the reason is purely historical, all new features are developed this way