I think there was another thread about this?
I have used the retina lock type no-peep (predecessor to this?), and really liked it. It does not take any more time to glance at it when shooting. It is not a "sight" to be lined up as much as it is a quick reference to make sure you are holding your bow the same as usual. I don't know how this one specifically works but the one I used was lined up with your bow drawn in your normal pposition. It was really easy to see when you are torqing your bow.