Gaweski was the man the variation is usually named after, but others including a younger Carlsen played it.
It ran 1.e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 d5
I believe the eventual verdict is that Black doesn't get quite enough and it doesn't seem to feature in more recent years. I only ever played it once during its fashionable period over ten years ago. My opponent had prepared for it because of its then popularity and we reproduced for a handful of moves, the game Adams v Carlsen from the 2007 World Cup.