(written in 2013)
As a consequence of the reading and answering Peter's bios ( www.ipernity.com/blog/peter ) I have felt useful to publish my present workflow. That's an adaptation of a post here: lightzoneproject.org/comment/2925#comment-2925

The subject (from a newbie) was: "which soft to use between Lightzone, AfterShot Pro or Darktable"

I have to mention that I exlusively use Linux for a large couple of years now, but also that all the submentionned softs but one exist for Apple and Microsoft's operating systems. For Apple users, Lightzone is still in beta stage but usable.

# - #

My worklow with Lightzone (LZ) and AftershotPro (ASP), at the date of this post.

Note: I also highly consider Darkroom's quality, but the ergonomy isn't top for the moment so I don't use it in my workflow. Nevertheless I believe that one day it will become the best postprocessing soft.

0. This step(s) is not direcly belonging to the processing but of highest importance!!!
Automated transfer with automatised renaming and simultaneous SAVING on a external gear with Rapid Photo Downloader (http://www.damonlynch.net/rapidransfering). It creates ad hoc folders too. I strongly recommand this soft which I use it for years now. BUT: if this soft only exists for Linux, it exists many similar ones for every OS. I also have an automated save of my whole personnal files done each night on an other external drive.

- Opening in LZ and
1. Trashing evidently unusable images.
2. Standard quasi automated processing with the use of 2 basic styles pro camera, one for native jpgs the other for raws. I have also a few specialised ones, for example for autumn views. The intermediar outputs are inner 2560*2560px limits and 100% jpg. They could be "tiffs" but that's not useful for my use, nor would be a bigger size. (Added 2014-0103: nevertheless I recently - 1-2 months - also use tiff in certain cases).
3. Second editing and trashing. Actually I'm trashing all along the process!
4. Fine tuning the rescaped images. Trashing.
- Opening that image folder in my file explorer and
5. Renaming the resulting outputs (in my case with Krename) because of the crazy naming system of LZ.
- Opening in ASP and
6. Applying lens correction for some images taken in raw format (added 2014-03-01: sometimes done with Darktable).
- applying a standard vignetting
- eventually a lil'bit "labtools" plugin for punch.
- eventually ZPerpector, perpective corrections
I do vignetting with this lens correction tool which gives me the smoothiest results possible.
Vignetting, lens correcting and labtools are the only corrections I apply with ASP in general photography. Because I find that for all other operations, LZ gives me far better results. After time and widely more than a couple of thousand images edited, all my corrections are applyed globally through a handfull of styles (LZ) or preselections (ASP) and then finetuned.
Its a bit different for images for selling objects where I widely use the "Perfectly Clear" plugin in ASP, wich I don't like for "fine art".
7. Marking the images to be definitely kept with one star, those to be published with two stars (seldom more than three or four out of hundert) some exceptional (documentary or estheticaly) with three stars (more or less 100 out of 25000...). Trashing.
But remember the automated saving at the beginning... I only trash within the working folders, not within the primary saved originals! ;-) It is worth to mention that that would be a very huge and stupid lot of work in comparison of the today's prices of drives.
8. Applying metadatas (title, legend), keywords and eventually a filigrane text at the bottom (automated styles). The keyword system of ASP is very smart for that.
9. Making a triple standard ouput of the images, the first to publish (i.e. those with two or more stars) the second for my screensaver, and the third in "tiff", all with included IPTC, xmp etc in 100% jpg. This is made with two "output presets" in ASP, on for "fine art" the other for family souvenirs. The only difference is that there is no filigrane on family souvenirs.

Would I have to print one day some images bigger than into 8-12 inches square, so I would just have to modifify an output size in the preferencies of LZ. Then lift/past the ready done modifications of these images in order to obtain new bigger outputs, eventually in tiff format. Then make an adapted finetuning of the images in LZ and ASP. Finally make ad hoc outputs in ASP, also eventully in tiff. Less work than it seems.

Thats'it and HIPS!
Uuuh... hope it helps!