Just FYI - no problem if this is unsupported config.
We have a host Server 2008 R2 Standard (x64) SP1 with VMware Server v2.0.0.2712 installed. It hosts two Server 2003 and one Server 2000. They did not appear on the hosts Summary page, nor any of the VMware reports.
The Hyper-V reporting appears to be working great!