I went to the same school (I presume) in Gothenburg. I came into the CS classes with a decent amount of math background, and a small amount of programming classes (FORTRAN, C, ADA and other kinds of evil you use in chemistry and physics). Our CS intro classes were Java and Haskell. Haskell didn't feel like a reboot to me, it felt like using math to write programs, so at least for me, Haskell felt a lot more accessible than learning OO concepts in Java did. I am sure lecturers caring more about Haskell also mattered, but at least for my background, getting the Haskell concepts was a easier than the Java concepts.