CB,
The berry nocks were designed out of function first And it just do happens to look amazing. James designed them to allow for a more positive seating of the string. What I mean is the string is either in the grooves or not, there is no in between where your wondering or when you look up there only one half of the loop is in the grove and one out.
It is a fantastic design, and if I were to order the renaissance or apollo I would without reservation have them installed.
But if you want the whole scoop just call James and ask, just make sure you have plenty of time to talk, it's been cold up there and he gets bored so you may be on the phone a while LOL