The wheels Nick is asking about are built on Hope Pro 2 hubs, not the Reynolds set. I believe Pro 2s are convertible to 15mm, was just throwing it out there.
Well, I think I'm too fat for CXray bladed spokes. I was JRA on the sidewalk when one of the rear spokes failed, which is a bit surprising since I don't have that many miles on the wheels. I'll probably have Greg rebuild both wheels using my usual spokes.