Well that is very bad.
I just started looking into it after I confirmed the CPU's are ivybridge-ep so i was going to raise the EVC mode from sandy but if it basicly goes to disabled then that'll be an issue when we add the haswell host to the cluster.
I'd like to unmask the added ivybridge features but if that means that it flips to disabled and the future haswell host ends up exposing other features then we'll have VM's that get stuck on one host.