I have heard it a few times............we often setup in areas where we can see each other. It's a fun change of pace and it has lead to some memorable moments that's for sure. I have heard guys whack 'em and I have watched guys miss 'em. It's really cool to "share" a hunt like that IMO. My brother had 5 or 6 does in front of him for about 45 minutes one day and he finally decided he was gonna shoot one and of course Murphy's law kicked in because just as I could see him getting ready to draw a buck walked out behind him and started cruising towards the does. I just sat there helpless and watched the impending three stooges skit unfold. The buck saw him and snorted which startled him and the does and everybody scattered like roaches........Seeing it first hand makes it even funnier.
My oldest brother went with me one day to a spot he had never been and I got to my tree and told him to head up about another 80-100 yards and sit in the next saddle...........it gets light out and I put my rangefinder on his chest and it reads 40 yards

I always climb higher then he does so he never saw me the whole morning. At 10:30 a buck walks out and I shot him about 10 yards to my right (50 yards from my bro)..........the look on my brothers face was priceless as that was the first time he saw me all day, thinking he had walked much further then he really did. He actually thought I was someone else at first