I'm hoping for the same. I got my mac recently and checked to have my address book sync but it only kept the phone numbers and emails for most of my contacts, it lost the photos, addresses and birthdays and other info. Not a huge deal, but I don't want it happening again and would like google to just sync straight to my mac for mail, calendar, and contacts. And then my iPod to continue syncing completely separately (though obviously the same info)
I had a thread a while ago asking and the person who responded said it should work just the same as the iphone/ipod but we might just have to wait and try it out to know for sure.