CBSubs 1.0.3 supports Authorize.net AIM (Advanced) and ARB at same time, but not SIM (Simple), as SIM doesn't support auto-recurring billing (ARB) at same time.
Upcoming CBSubs 1.1 will additionally support Authorize.net "silent calls" and AVS as well, but most probably not SIM.
CBSubs 1.1 will also have an API which will allow to more easily add support for many more gateways, possibly Authorize.net SIM too.