Please see my post titled Sometimes you have to keep separate systems.

Since I wrote that post I have been trying to integrate my two separate Outlook-based systems into one by exporting data in Calendar and Tasks to CSV files on my work system at the end of each day, e-mailing the files home, and importing them into my home system when I process my personal e-mail.

This practice saves me from having to re-enter data manually and it makes the weekly review go much faster since I only have one system to review.