I use a red flip up lens cover on my SUREFIRE. Use it for a second and then move. Wish I knew where to get one for my HK UTL.
There was an article in "Infantry" magazine a year or so ago written by the commander of one of the Ranger Battalions (the 3d I think, I'll have to dig it out) on conducting a night attack totally illuminated in the IR spectrum. He mentioned that with all of their resources (PVS-7s, PAQ-4s etc.) they found white light the best for building and room clearing. The article didn't really get into why. Any thoughts?