Experiences with Red Hat Network RHN on VMware (supported?)

Hello community!

Our company is looking forward to install Red Hat Network (RHN) 5.5 for managing our RHEL environment.

Because we don't want to invenst in additional hardware, we'd like to use a VMware ESXi 4.1 virtual machine (migration to 5.1 is in progress) for this.

I suppose that this setup is supported because I found no dedicated support matrix for RHN 5.5 and ESXi is fully supported for RHEL 6.

Am I correct?

Has anybody of you guys personal experiences with this setup? How big the environments you're managing? What's about performance?

Best regards from germany,

Christian.