Although it is not a best practice, some people insist in having SCVMM hosted in RODCs. Have a look at some issues that you might encounter when doing this.
From SCVMM Team Blog
Using a Read Only Domain Controller as a Host in SCVMM 2008 and R2
A Read Only Domain Controller (RODC) can only be used as a Host if it was already a Host prior to being promoted. If a RODC needs to be used as a Host and was not previously managed by SCVMM, it will have to be demoted to a member server and made a managed Host prior to promotion back to RODC.
IMPORTANT: Although a Read Only Domain Controller can be used as Host in SCVMM, this is not the recommended usage of a Read Only Domain Controller.
KB975113 discusses an issue where a read only domain controller (RODC) can only be used as a Host if it was already a Host prior to being promoted. The link and title is below.