So you wish to use MOM as a destination for vCOps alerts?
The vCOps integrates pretty well with Hyperic using the solution pack. The legacy adapter had it's challenges, but now with the solution pack it functions much more efficiently.
In terms of using MOM as a trapsink for alerts, it is certainly possibly via SNMP once you drop in the vCOps MIBs. I'm personally not a fan of it, as MOM/SCOM isn't my preference for a SNMP trapsink.