I did it with my 2011 mini (256GB Kingston Hyper X and a 1TB HDD) and it works great. Following the steps it was really easy. I CCC'd my stuff to a temp USB external and then created the fused volume and then CCC'd everything back. After a couple of reboots and running a few apps, OS X moved everything around. The moving is done after the machine is idle for awhile. ML has the OS and frequently used apps including my Fusion XP VM on the SSD.