I have of it too and i have try but in final not working good and better to go on Win8 lol.
Ok Seba , let's make a deal?
Look at the Catalyst control center
Those two profile Asus1_Panasonic2 and Panasonic1_Asus2 work fine to switch the monitor, in less a second.
So the answer is , is it too much complicated to allow a new custom operation 'entering MP' and 'exit mediaportal'?
For Amd owner it's a simple custom executable such as C:\Program Files (x86)\ATI Technologies\ATI.ACE\Core-Static\CLI.exe Start Load profilename=Asus1_Panasonic2