The documents actually contradict themselves. In one place you'll find that it's supported and in another you'll find that it's unsupported.
We ended up talking to our SE who said that with 5.1, it would be supported in our configuration. Contact your's for clarification - the last thing you want is to have issues with vMotion or storage vMotion, drop your cluster (been there, done that), and have them tell you you're out of luck.