So, from what I am gathering, it looks like you have to create a local profile on your iPad, then import the steam save games?
This is quite a confusing process. Once I created a local profile on the iPad, then I went into options and imported from Steam.
Then I went back to the profile menu and it still only shows the local profile that I created on the iPad. But then I noticed that the "Continue" button was now available (I hadn't played or even created a character on the iPad). I hit continue and was dropped into my steam save.
I should also mention that when I did a quicksave on the iPad, it sync'd back to Steam.