[ovirt-users] Any real experiences with nested virtualisation?

I have ovirt 4.3.5 and Openstack hosts. There are 2 x openstack compute and 2 x ovirt hosts with hosted manager. I think i can simplify the management of this if I were to virtualise the openstack compute nodes as VMs on ovirt. I wanted to reach out here to gauge any other users experiences with it if at all. From the research I have done it looks like from the VM perspective, migration must not be allowed. Any info / comments / feedback appreciated. Regards,