I'll definitely have to pick it up when I get the chance now. I read an interview with John K. at on Treehouse of Death's site where he talked about recording the album. He mentioned that he started recording the vox in the growled/clean style he uses for Biomechanical but that the Balance of Power guys put a stop to that immediately.
Regardless, I'm sure it'll still be interesting to hear him using nothing but melodic clean tones.
Smart guys then! Growls fit Biomechanical, but not BOP.