Whatever method you use (flow vs non-flow), when you need interaction in the middle of processing you need to save state. Nothing forces flow state to be saved in the session. In the non-flow design I use in TG I save the state in the html as hidden input fields.
So I was wondering if anyone knows how big Statesaver state are? Could they be reasonably saved in a hidden field? But then I guess you got a security nightmare on your hand unless you can crypto-sign the state...
