I just started practicing with a holosun reflex red dot and in lowlight/darkness when I turn on the stream light TRL-7 I cannot see the red dot? Is this normal? Is this where you switch to using the iron sights or is it considered not practical to run both? I know there are some who argue that you should use a separate flashlight instead of the mounted version but that isn't happening on this particular pistol.... this pistol is my nightstand gun. Thanks.