Recently Renzo Gracie had a seminar at Frota Academy in Zurich. He was asked to show his favorite knee on belly escape.
We can say that this is one very good escape from this type of knee on belly position. And it’s also very useful when someone is trying to knee slide his pass through your guard.
The only question that is still unanswered is, what is Renzo’s favorite defense from “standard knee on belly”. When both hands are controlling you and the knee is full across your stomach.