I found that because I carry a Surefire 300U that whenver I was in dark and would activate my light I would black the tritium out of my night sights so I would simply be seeing a black on black sight picture even with night sights. I realize though that if you are shooting into a lighted area, you will not be using your white light.
I started using this FO front sight (stock setup that came with the gun) and was going to switch it out quickly for a night sight front and black rear (as I have on all my other guns) but found that I was not running into the problem of shooting from a dark area into a lighted area where I was not able to move into the lighted area or I did find that when I would acquire my sight picture and the FO was not shinning, I would be able to use a black on black sight picture of the black rear sight and the metal outline/ FO holder of the front sight to get a good sight picture.
Its not perfect, but I dont think any one sight system is perfect.
It has worked well for me and I will continue to test it and see how it works, if I run into alot of problems with it I will switch it to my usual setup of black rear and night sight front...
.... it is also nice that we have a VERY LIBERAL duty gun policy