I'm going to upgrade my licensed FineReader 10 to FineReader 11 (so that it.source too will have a volunteer with a legal FineReader 11 software... :-) ), I downloaded the trial software and I can confirm that it produces a complete djvu file (images and text layer) within a single step.
Text layer hasn't full range of details, it's organized into two levels (page and line), while OCR engine on IA servers produces a very rich "tree" (page, column, region, paragraph, line and word). Images can't be finely tuned, but it is possible, given images of the same width/height of better quality, to "transplant" text layer into a different djvu with a few DjvuLibre commands.
Is anyone of you interested into a rather deep exploration of djvu text layer by python? I'm working about it, but I feel that there's so much to do, and so much to gain. I'm currently working into a Windows dropbox folder, containing DjvuLibre routines too.
Alex_brollo