Looking at the program when I launch it, it says it would use sync services or isync to use the local iCal/Contacts/reminders databases. Which makes no sense since Mavericks removed the sync services..
If you are using an exchange server, it MAY work (as there does appear to be exchange support). But it is a bit expensive to just try it.
I want to say that I'm not using it because it didn't work well with the local databases, but I really can't remember (it was a long time ago).
You could try reading the support forums at http://www.microsoft.com/mac/outlook/ to see if they can be more helpful.