faniebraai
RIP
Then, as far as I understand, the only way to do that is to add another Gmail/ Google apps account. Which you don't want to do.
So there's no real solution there.
Of course there is a solution... you cannot ONLY sync to google accounts. The My Contacts app you suggested in theory does exactly what I want it to do, but the sync doesn't actually sync, and the web interface is a dog's breakfast.