I was thinking an advantage is that you can halt the queue, and/or the queue will pick up where it left off (on the next item in the queue) if power is cut. Not sure that this does that, though.
A quick read makes me think it does not do that. Instead when one process exits it looks for more queued job files.
[edit]
I suppose if you ran nq on boot, it would find the existing queued job files and you would only lose the one running job? Or maybe it would rerun the one that was in progress. Not sure.
