WOW WOW WOW WOW.

I just set up Scratchbox by hand, installed lightblue and harmattan-python-pybluez, copied the dist-packages folder to my n9, added the path to PYTHONPATH, granted permission with chmod and voila! Worked!

Thank you guys! It's so exciting learning new stuff like that.
And Elleo, thank you so much for your pre-builded lightblue -- helped me to understand what exactly I needed to copy from my scratchbox env to my n9.

I will set this post as solved.