Excellent response. This is known as Pflug stance, or the Plow stance, and as you said, this position allows you to maneuver more easily upon the battlefield.
You must also remember to lead with your dominant leg here, because it is vital to switch positions during this stance. A small step forward or backwards can allow you to turn the tides easily. The point should also be aimed at the opponent's chest or throat and the hilt should be held more off to the side in front of the hip joint rather than dead center between the legs.
Well said about this stance being more defensive. You are completely correct.
Next stance then, known as the Alber stance.
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Lower your hand upon the sword's hilt, pointing the blade down. You can lead with either one of your legs.
What might this be used for?