boonie: "I have the previous version and also sized up one for an aftermarket insole and heavier sock. "
Size up. I also highly recommend putting a wool insole in it. It will absorb a lot of moisture and can be removed at camp to dry out, keeping the boot much dryer as well.
The one issue I had was that the right boot split on top in the crease above the toes on the right side. NRS sent me a new pair no charge and I sent the damaged ones back to them.