On the cusp of my last blog post, one of my colleagues pointed out another Microsoft document that shed some more light on the virtual desktop subject. According to the Licensing Windows 7 for Use with Virtual Machines licensing brief, which actually spells out how Windows can or can’t be licensed for use in a virtual desktop, it also highlights a couple things that you can and can’t do with VDA.
One thing in particular that caught my attention, was that if you plan on using a Client Hypervisor, like Citrix XenClient or the one built into Windows 8, you cannot use VDA. You pretty much have to buy a device with OEM Windows and then upgrade to SA to run a VM (or 4). You also can’t dual boot with Windows, or run Windows locally with up to 4 virtual Windows VMs, but I don’t see too many folks looking to do this with VDA anyways.
So for right now, it looks like licensing your endpoint with OEM Windows and upgrading to SA may yield the most amount of benefits if your use case calls for it.