I had actually gotten the pair last week and have been testing them out in low light conditions. I also had recently gotten the Oakley Ballistic Det Cord TR22 Prizim. I have yet to use these in a range situation but I can report that at night, at least in well lit instances such as urban environments, the TR45 is a pretty good lens to use.... however it is still not as effective as Hi-Yellow or a lens like it for lesser lit road conditions ( country roads). The Det Cord TR22 is great for day light operations for both shooting and other activities but not all that great under over-cast or darker lights which is where you would want to switch to the TR45. I think one of the draw backs to this prizim line is that they seem to be specialized rather than a universal tool. Though I am on the fence as to what the different would be concerning Shallow Water vs Fresh Water. In any event, it was hard to find any good user reviews on the two lenses beyond some skier comments. Anyone else use these before? I was hoping the TR45 was light enough for patrol use at night while giving the bonus of target recognition etc.