Some of the metro apps are pretty interesting and could spare the user to install third-party apps, like the PDF reader app, the messenger app, ... The major issue with these apps is that it seems impossible to launch them in a windowed mode, which is not convenient for desktop users.
Does anyone know whether or not Windows features this possibility ? If yes, how ? Incidentally, if it doesn't, any idea why (reference to any Microsoft official statement, ui expert blogpost, ...) ?