So, I'm finishing up my build for duty use and was thinking about adding a front night sight to the build. I have the TruGlo Tritium/Fiber optic in mind. My thoughts are that I'll my TLR-1 mounted at 6 O'Clock under the forearm will illuminate the fiber optic brightly enough so that it will be easily recognizeable. My concern is durability. I really don't like exposed fiber optics because I feel they're succeptable to being bumped and knocked loose. Discuss.