I can't speak for this particular lupine species, but in Europe lupine seems to be a good candidate in the search for a native plant species that can be grown here instead of soy beans. Personally I don't really like the taste of soy products so I hope that works out. And it's a nitrogen fixer too, which is a nice bonus.

For example, I have seen various lupine tempe brands, and in Germany I can get lupine "coffee" (it's not quite the same but tasty on its own terms, and I need to avoid caffeine).