I think this question can be more general:
Can someone from AMD confirm that d3d9ex+ resource sharing does NOT work when applications run on the discrete GPU on the latest model laptops with switchable graphics ? I think this really need a clarification , is it a limitation that will be permanent or is it a driver bug that we can assume will be addressed in an upcoming release.
Laptop used for testing:
Laptop HP Pavilion G4-2130TX
Radeon HD 7670M
Driver date: 03.11.2012
Driver version: 8.982.10.1600
CCC 2012.1104.523.9449