Great pattern Otto! That really makes for a nice looking BWO.
I think cdc is over-rated actually. I love the Cdc & Elk pattern but don't believe the cdc is the player in the pattern that it is made out to be. I don't use it a lot. I only use natural (my brother supplies me a bunch every year). Mostly I use it just like Otto. As a dubbing or mixed in with dubbing for texture, I like it.
A great place to discuss various patterns and tying methods for wingless wet flies, Yorkshire spiders, Flymphs and other patterns tied with soft hackles.