Holy zombie thread, batman.
My post you quoted was from a long time ago, and I have since purchased pumps to transfer liquids on my single tier stand, I use one of the pumps to recirc the BK during chilling. I also have a dedicated stir plate, so I have no interest in this device anymore (other than that its still pretty cool!)
At the time I was thinking this would be nice to have since I had no intentions of buying pumps. Would have been a multi-tasker if used for starters, during chill, and then possibly during active fermentation as others had described.
With the brewing knowledge I have gained in the past 3+ years I certainly wouldnt covet this thing. If I got it for free or dirt cheap Id probably figure out a way to use it in the process though!