I've listened to it a bunch of times....it's catchy, but if I heard this without knowing who it was, I wouldn't have guessed Leftfield. I don't spot any dub or reggae influence, but it's very bottom heavy so it probably would sound great on their upcoming tour.
Their website,
http://leftfieldmusic.com/ says if you pre-order the vinyl, it will be shipped with Neil Barnes signature.
---Jason