From memory, this plant was listed as a weed in a CSIRO publication. Does anyone know the book I mean? Big heavy A4 sized softcover... lists basic details of the plants and locations where they're a problem.
It definitely has the potential
I planted some last winter for eating and they have now taken over a good portion of one of my vegie beds. They are getting full perth sun (HOT atm), very little water and loving it.