I've started using 510c on pcc with with dot and circle on. With open i like the the dot only. I think you are right, too much distraction having both on But, I shoot with dpp now since I broke 2 510c on my open.
I received your DM and replied back. It think either way it will work. Just sell the other one that you dont like, im sure someone will grab it. And yes, we all suffers in agony because we all wants the best for our beloved toys.
I know what you mean, im sure plenty of people including me experienced same thing. Let's make a deal, I can lend you the grips so you try it out before spending $85 for it. Keep it for two weekend and send it back.