Scribus: Professional page layout for Linux

Whenever people discuss software that they would like to see ported to Linux, they mention desktop publishing (DTP) applications like Adobe InDesign and QuarkXpress. But Linux already supports an application aimed at DTP users. Scribus is an open-source page layout program that runs on Linux, Windows, and Mac OS X. Is it a viable alternative to proprietary products for professional production work?

For nearly a decade, starting in the mid '90s, my primary responsibility at work was editing and laying out graphics and text in documents. QuarkXpress was the first page layout program I used, followed quickly by various versions of Aldus (and later Adobe) PageMaker. A few years ago, I started to work with Adobe's successor to PageMaker, InDesign.