Yeah, the Murray Gray association mentioned a "square meater" endorsement. No idea what that means.
I had a customer inquire about "grass finished" beef and when I asked what they knew about that concept they said, "well not fed any corn." When I replied "you realize that technically corn IS a grass" the look on their face was priceless.
Locally, to finish fat cattle the "grass finished" operators are using progressive paddocks of increasing legumes, which I just like to tease them about -- "so, not grass finished? more like legume finished" -- haha, just the wonders of marketing.
Grass fed small framed cattle is a good concept, best of luck!