Dubov uses this defense quite successfully.
1. e2e4  1... e7e5  2. g1f3  2... b8c6  3. f1c4  3... g8f6  4. d2d3  4... f8e7  5. b1c3 What's new is well-forgotten old. What we played as children is coming back as a chess fashion. 5... d7d6  6. a2a3 