I also scoped this movie out at the Toronto Festival (Sept 14th). They showed it at the ROM theatre which has the unfortunately acoustic property of being directly over a subway.
I liked this movie a lot, more for its style than anything else. The tunnel scene has some of the coolest lighting I've seen in a while. The plot was a bit hard to follow and I did leave the theatre scratching my head a bit. I didn't know what to expect at all, so it took me a while to get with the flow. I'd like to see this film again to get a better handle on the story.
I definitely recommend this film for fans of visual, stylistic film making.