I really don't think he's using any effects at all. I've messed around with the chopstick thing after seeing him do it, and it's pretty amazing the sounds you can get. For instance: why can you get notes LOWER than the low C string? This I don't get. The bass note he gets are really happening. I figured it was something to do with his pickup, but it happens with no pickup.
My acoustics knowledge isn't bad, but that one has my brain going, "hfffrrrrrrrrrrrr".
I'd highly recommend having a go. You'll be able to work out a lot of it. As for the rest, remember, he IS James Hill.