iCal sync to Outlook for Mac 2011

I'm running Outlook for Mac 2011 on OSX 10.8.4. We have a hosted Exchange service for email and calendar sharing amongst colleagues (not all on Macs), this works fine as does sync to the Exchange accounts to/from mobile devices where we can all also have our private appointments displayed simultaneously. Any Exchange Calendar events also show up in iCal.

What I would really like is for any non-business events added in iCal on the iCloud account to show up in Outlook so I don't double-book from Outlook. The information I've read seems to suggest the lack of iSync in OSX 10.7 onwards is a problem, my questions is have I understood this correctly and does anyone know a way around this ?

Stuart