I think the high contrast is due to the IR film as such - it did not need much of a contrast/sharpening treatment. I actually liked it for the same reason you mentioned... the metallic emphasis.
I did a LOFI-cellphone documentary about my way to work, work and back just for fun... not much to do with the pics themselves as I didn't want to interfere with their lofi-quality and all...:
The Daily Grind
cellphone, BW-conversion in GIMP, arranged in inkscape