Ok, so because my work has given me a license to VMWare Workstation, I have never really gone to the trouble of using VirtualBox.
But I really want to move to use FreeBSD (well, PC-BSD) on my laptop but I have to have a Windows 7 box for work.
So I had Windows 7 with PC-BSD in a VMWare Virtual Machine.
However, I am switching that as we speak.
I now have PC-BSD installed as my primary operating system, and Windows 7 in a VirtualBox Virtual Machine.
There are some features we use at LANDesk a lot, such as many snapshots, and PXE booting, and more. I will test and follow-up on whether this is a good solution for me.