ken-ichi's anaylsis is spot on. I was intrigued by IH when it was first announced, but since I was looking for systems or subsystems to add to my campaign which uses the Conan RPG as the core rules set. Since IH is designed to produce power-levels on par with default D&D characters (just without the magic items), I ended up passing on it.
BoIM, on the other hand, turned out to be just what I was looking for. Combat options that I could insert into my game in a plug-n-play fashion.
I highly recommend it.
Azgulor