Since the VMware Virtual Storage Appliance has been out for a couple of weeks, has anyone done any comparison (performance) to see how it stacks up against Open-E on the same hardware in a 2-node cluster?

I'm guessing to make it fair, you'll have to virtualize Open-E on top of vSphere 5... From all of the overhead VSA appears to have, I'm guessing Open-E will be the no-brainer.