I am not a great fan of cheekpieces but if I was to do one this is about the right shape in my mind. nice curved bottom edge with very symmetrical ends that balance with the overall stock shape. The only detractor (if it could be called that and that is debatable) is the comb fluting. I try to bring the comb nose back a little from the centre of the grip cap )vertically) which has been touted as the correct place to end the comb nose and by having it closer to the rear of the grip cap I can shape the top of the wrist with a narrow comb nose and have no need for the fluting. Of course the more open grip negates this concern but I have a comment or two on that style as well
I should credit the owner /maker of this rifle but I clipped the picture and a few more from AR and didn't note who had done it