I’m feeling lazy at work, so I’ll help out.
From a quick google, only MTC is supported since VST32 (source: gearslutz)
to get more details on cubase and sync options:
http://www.soundonsound.com/sos/jun04/articles/cubasenotes.htm
I work in a similar way as LDT with reaper/live/sonar. sonar for example can be enslaved to the octopus midi but it will disable Audio processing (midi clock not enough resolution to work with audio)
However, when I am using the PC as a simple multitrack recorder to record a session to be later chopped-up, I slave everything (but the PC) to the Octopus.
Cheers,
/R