Have Mountain Lion remember different monitor (not window) arrangement I'm using 10.8 on a new retina MacBook.

At home, my external monitor (an HP) is located to the left of the laptop stand. So I want it my display arrangement to be [HP] [MacBook].

At work, my external monitor (a Viewsonic) is located to right of the laptop stand. So I want the layout there to be [Macbook] [Viewsonic].

Under 10.6 it used to remember the layout as part of the monitor profile. Now, that no longer seems to be the case.

Does anyone know whether this is the new normal behavior, or how to fix it?
Have you tried setting up your screens with SwitchResX?
It has settings for each unique display connected to your computer. The app cost a couple of dollars, but theres a 30day demo to try if it helps you.