Whether or not a variant or some other terms catches on among us remains to be seen. Self naming of a large, diverse group is ultimate crowdsourcing. By definition, no individual, group, organization or even consortium of organizations controls the process. Making it stick later with the Department of Labor is yet another matter.
In the meantime, I'm exploring the precariat here and around the world, primarily but not exclusively, knowledge workers (go Gramsci!) to aggregate and curate sources. I added sites and alerts to the feed reader to bundle and widgetize, started a Storify series (first entry below) and am also developing a "Welcome to the Precariat" newspaper in Paper.li.