I have my MBP hooked up to an external monitor at all times. I never use it as a "notebook" and would like to use it exclusively in clamshell mode. I recently installed insomniaT so that I can do battery cycles, etc. without ever having to open the lid. My concern is does insomniaT leave the MBP display on even with the lid closed? I noticed that my "Color LCD" display was still active in my display monitor while running insomniaT on battery power. Is there any harm in running in clamshell mode exclusively?