I'd tried SyncMyCal at home and work for gCal synchronization with Outlook, but it crashed Outlook.
I then tried gSyncIt. This time it installed, but Lookout reported that "another Outlook Plugin has installed an unofficial version of the Outlook libraries which breaks Lookout".
Sigh. Lookout may have been euthenized by Microsoft but I absolutely depend on it. I've never seen anything else half as good, including Microsoft's "replacement" windows desktop search.
I'll uninstall gSyncIt and try reinstalling Lookout. The gSyncIt install was suspiciously amateurish anyway (an installer named setup.exe?!), and I wonder if it really did install a hacked version of the Outlook libraries. Not to mention the lack of documentation.
One plus to this, I'm now reasonably sure it was a Lookout/SyncMyCal clash that crashed Outlook at work.
I'll have to wait and see what else comes up. Google's help file more or less promises a sync solution from them. I probably need to give up on Lookout (it's not compatible with 2007 anyway), but I'm not in any hurry to do so. I'd be in more of a hurry if I had more confidence that there was a great Outlook/gCal sync solution available.