Infront Consulting Group offers free MP for monitoring Orchestrator 2012 via SCOM 2007/2012. Taken directly from Infront site:
The Infront System Center Orchestrator Management Pack is a FREE MP that allows you to monitor your Orchestrator Runbooks in System Center Operations Manager 2007 R2 or 2012. The native Microsoft MP provides monitoring for the Orchestrator server roles and architecture but it doesn’t monitor your Runbooks. The free Infront System Center Orchestrator Management Pack fills in this gap by allowing you to monitor your Runbooks in SCOM.
The MP can be downloaded for free by registering here.
Many Thanks to Infront for sharing this MP with the community.