I wonder if it would be good for brewing. Irregular shape is fine, as you don't really want super fine milling, and gluten content isn't super relevant. If it has a strong flavor, it could be a neat way to add an extra dimension to beers, not to mention potentially lowering the environmental impact.
Yup it sounds like someone is making beer with it, it says
"A local microbrewery called Bang now makes a Kernza beer named Gold". I'm curious what it tastes like too!
I haven't read the article in depth, but I wonder if like wheat when using large quantities of wheat in mash, if you need to add rice hulls to prevent a stuck sparge, not that, that is a big issue though.