Perennial wheatgrass, Illinois bundleflower

The Land Institute has been making some progress on building perennial wheatgrass into a commercially viable grain. I find myself wondering whether anyone has found this to be a useful/productive plant on a homestead or permaculture scale. Has anyone had experience with this plant?

The other one I am curious about is the Illinois bundleflower, a native north American leguminous forbe. Again a perennial.. Looks pretty intriguing and I cannot recall seeing it come up in my reading before.

The bundle flower came up when I was researching the mimosa ( Acacia mollis. Acacia julibrissin)in my back yard.

Prairie Mimosa at PFAF

The wheat grass came up the other day,when I came across a comparison of the roots between annual and perennial varieties.
The differences are astounding.

I am nursing some of my mimosas in hopes of exploiting their potential as nitrogen fixers and chicken feed.
Ive wondered how to find out if the seeds of the mimosa I have are just as edible for humans as those of the Prairie Mimosa
Apparently the only test is to eat it.

Illinois bundleflower grows wild near where I live.
There is a very large patch each year on a off-ramp a few miles away.
It seems to like very poor growing conditions and reseeds very well