Editing DEFAULT version with Flex Viewer and topology in desktop

ESRI Users,

Recently I have set up an Oracle GDB, ArcGIS for Server 10.2 and ArcGIS Viewer for Flex in order to give my users read/write access to certain feature classes using internet browser. They do many edits using the Viewer so I did not registered the dataset as versioned. I did set up auto refresh parameter in feature layers in order to see edits made by other users. But apart from that we have two desktop licenses (Standard) and I want to set up topology on the dataset to give desktop users possibility to verify the data and to remove topology errors.

I want both types of users to see their edits.

Is it good idea to register the data (we use DEFAULT version) as versioned, create the topology in it and edit the topology in desktops while maintaining existing Flex Web App? Is it going to work? I suppose that desktop users would have to save edits and compress the GDB in order to move their edits to base tables, right? Web clients see and edit base tables, right?

How to achieve such hybrid solution?

Thanks,
Bart