Used one since 98' and any hunting bow of mine will always wear one.
I went back to a regular peep sight last season for the heck of it and was a paranoid nut worrying about last and first light shot opportunities.
Put it back on (newest version which is nicer) this spring and it's like an old friend.
A couple nights ago I stepped out the back door and shot 2 arrows from 25 yards, Robinhooded the first arrow dead center of the kill zone.
Gotta stop doing that.[:@]
I honestly think it's every bit as accurate as a small in string peep sight and none of the obstructed view.