I personally like to play against it, and I don't really think it's the best weapon White has to fight against the Sicilian.
This variation reminds me a lot of the Alekhine defence. In fact the principle is the same: Black somehow "punishes" White for such a slow opening with c3 attacking the center right away. White pushes the pawn and the black knight finds a really nice square on d5.
As for the Alekhine the "problem" for Black is maintaining the king's knight into the game, and not allowing White to cramp the position (ie. by pushing c4 forcing the knight back to b6). Otherwise that black knight will have serious problems to get back to the battle. The main difference in this Alapin set-up in comparisson to the Alekhine is that in the former Black has already played c5, which gives him much more space that in the Alekhine set-up
With normal play I would say that Black can achieve at least equality with not many tears.
That's my feeling for this opening. Hope this helps.
The alapin sicilian.
Any thoughts on this opening from sicilian players? Do you like/dislike playing it? How do you usually respond?