No, the 600m series (some GT 640m and all GPU above that) are not rebadge.
MetabBox (rebadged Sager and Clevo) in Australia will come with the GT600m (from 650m to 675m) and 7000m (don't know which one but I suspect the lowest will be starting from 7870) and available by the end of April.
They also come with IB.
So I would say it is worth the wait.http://www.affordablelaptops.com.au/contents/en-us/d427_metabox-clevo-w110er-laptop-notebook.html
Just look at this, the GT 650m is about as fast as GTX 460m, an in 11 inch!!