Overcloud deployment on combination of virtual and physical hosts

Hi,

Is it possible to deploy RHOS platform 10 on combination of virtual and physical hosts for testing/poc purposes?

Director installation guide says: It is recommended to use bare metal systems for all nodes. At minimum, the Compute nodes
require bare metal systems.

So I am assuming if I can use bare metal systems for compute nodes only and deploy director and control nodes as VMs on KVM? thanks