Solution Manager Diagnotics Agent & Introscope

SCN,

SolMan Diagnotics Agents (SMDA) are used to establish connections between SolMan and managed systems.  (1) Are these same Diagnostics Agents capable of sending J2EE data to CA Introscope 9?

Some guides require SMDAs, host agents, and Wily (Introscope) agents--some outdated.  (2) Correct me if I'm wrong but SMDA 7.3 includes a SAP host agent for monitoring OS level metrics--has this always been the case?  (3) And if the question (1) is possible, when did this happen (versions)?

All thoughts appreciated.

Thanks,

Sawyer