Not specifically, but I think I have seen their operation somewhere. One thing I have learned from comparing both is that raised beds are superior in many ways to open urban gardens. I even grow tomatoes on a trellis from a raised bed, although sprawling things like winter squash need more space. I got my start using Mel's square foot garden book and use Mel's magic mix for soil. It looks like the folks in your article are onto something similar, too.