Neat never seen those before.
You used to be able to buy what they called a full cut plowshare it was longer and extended a bit past the moldboard.
Last set I had was for plowing up some 7 year alfalfa on a JD 350 hyd reset plow. I have not seen any for a long time now just the regular plowshares.
I know the full cut shares pulled a lot harder "here"