I've tried django-pipeline and it seemed great when I started, but ultimately I had to abandon it because I discovered it would've taken an inordinate amount of work to get it compressing the CSS/JS assets efficiently. Out of the box (just following the documentations suggestions) the django-pipeline compressed JS was 5-10X the size that I get after django-compressor is done with it (and with compressor I didn't have to do any tuning or optimization beyond basic configuration).
At any rate, I'm happy that you were able to get it working, Mike! That is really neat. Do you think you'll write a blog post about how you did it?