[kvb]

Could you justify this assertion? Here[1] is an analysis by Andreas Rossberg that indicates that this isn't the case.

[1] http://stackoverflow.com/a/23019436

[mafribe]

I was thinking about the statement

   1ML is a user-friendly surface syntax for System Fω 

in the paper's abstract. I think Fω lives inside Scala. But, as the stackexchange article you cite shows, I should have been more careful in my statement.