Unsettling.
Definately not the start I was expecting from an ambient piece, but it settles nicely. Generally this doesn't feel lika an ambient track to me, more one for the Misc section:)
As you wrote in your description it definately has a disconcerted feel to it, never really settling. I would have to say that the sudden drum break and then cymbal crashes sound a little out of place. Perhaps try replacing the cymbal with a more electronic sound instead of an acoustic one. There's some good depth to the sound and the ending noise is fitting.
After the tracks finished i'm kinda left thinking 'what just happened!?'.
Not really a track so much as a collection of sounds, but an interesting collection nonetheless.