I'm not talking about GMs. They handle the LS differently. Carlsen sometimes play c4 instead of playing c3 all the time. He even exhanged his light squared bishop on d3 against a knight on g6.
This is something an average ls player will never do because they just memorize all the moves of their system.
Good to know :
Carlsen enjoys to play it.
Kamsky is the worldwide specialist.