Looking at all the models, for GP2/3/4/5, when they say GP2 has a "2-finger mini-bar-end" vs GP3 "3-finger bar-end" and GP4 "full size comfort bar end", what exactly are they talking about? How does GP3 fit 3 fingers vs GP2 fitting only 2? Do you just stick a few fingers out to rest them on the mini-bar-end, vs with the GP4 you might rotate your whole hand and hold like a bullhorn?