I tend to produce academic religious materials. I have been using InDesign for around ten years but have more recently been trying out Scribus. Unfortunately, Scribus is let down by an extremely poor UI, however if it were to update its interface then, at the price point it comes in at it would be a most excellent application.
I suspect that once we are closer for certain to knowing the likely time-frame for the inclusion of referential/citation marks and their associated footnotes and/or endnotes, I may be much happier in giving the software my full backing. As it is for now, I sadly cannot commit to a purchase, which is a great shame as the general progress so far has been amazing. So it remains at least for now InDesign or Scribus depending on the materials I am producing.