Well, I finished this one up today. After cutting the first core, I made a few changes. I adjusted the thumb area to make it larger and I also slightly raised the forks (4mm).
Today, I spent a good couple of hours shooting it at the shop. Fits my hand perfectly and was completely comfortable shooting the whole time. I am not sure which I'll like best in the long run, OTT or TTF, but I was pretty accurate with this one today. I'll probably end up making this same design in a TTF as it fits my hand a lot better than the R10 design I built last week.