Currently we are preparing a new Scrivo Pro update (v2.5) where you will be able to open and sync directly Scrivener projects (Mac OS X or Windows) and use your project binder structure. See attached screenshot.
The syncing with Scrivener will be done as usual via Dropbox. Just copy your Scrivener project folder into a Dropbox subfolder, open it in Scrivo Pro and you will have your binder and documents ready to be edited and synced in your iPad and iPhone.
PS: Please, note that this advanced feature will be only available for Scrivo Pro users.