Personally my 55yr old eyes can pick up the See All Open Sight much easier and quicker than a red dot. I can see the See All sight better without my glasses, the red dot is much more difficult to use without my glasses.

Jon Tracy reviewed See All Open Sight - Facebook

Virtually indestructible sight and I don't have to wonder if the battery is fresh as it knocks around in the back of the squad for days, sometimes weeks at a time. Much has been said about the so called "learning curve" of this new fiber optic sight, however I found that to be minimal at most. For most LEO applications. A shotgun needs to be in operation quickly with little or no added distractions such as battery, where's the red dot, etc. The target application is fast and sure with this sight and it doesn't matter if you end up under a car, shooting with one hand, propped up , on an elbow on the floor behind a desk, etc. As long as that reticle (mine is a triangle) is on the target, that's where that slugs going. You have both eyes open and situational awareness isn't denigrated by closing one eye. This is an inexpensive, practical and affective sight for my application.

Les - Amazon Review