DAS, User-defined Schemas and Virtualization

System

Is it true that if we are to use DAS and have virtualised staging that we must change our own production code (or in this case 47 stored procedures) so that :
1. They check the filepath to see if this is the production server or a staging server workarea.
2. If it is the staging server, which workarea.
3. Use the work area to determine which is the correct delta-base table view.

Or is there some silver bullet ?