Whether it's idm or not is immaterial. Fact is Nommo Ogo is really really great. I've seen 'em a couple times (once opening for VSnares, once at a Katabatik (that's the record label they started) showcase thing in Oakland).
If I have my facts straight, they are a laptop trio originally from Alaska who relocated to SFrisco a few years ago. They don't have a whole lot commercially available, but a shitload of cdrs and stuff through those websites below.
The music is dark, slow, and heavy. I would compare it to the mid era Silksaw stuff (Preparing Wars, This Time Its War). Really great.
http://www.katabatik.org/media/TOPAAPOBWAII%20-%20Yellow%20Lion.mp3
http://www.katabatik.org/media/topaapobwaii_-_blue_roots_drink_seeds_eclipse.mp3
http://www.nommoogo.org/nommo_ogo-lost_oar.mp3
http://www.nommoogo.org/nommo_ogo-people_of_the_depths.mp3