Surprisingly, it works well. It was on my Niner RLT9 and stole it for the Creo. All the mud was on my helmet, not on the jersey :D but the front tires did a lot of "mud slinging."
That segment was a nightmare, the Creo (with me) sank like almost 1/4 of the wheel. I was deep in the soft clay it was like a quicksand. I almost lost my shoes :D
That photo was taken after we were rescued by the locals.
My Creo is at the Specialized Elite store and they're fixing the dropper seat post, the Futureshock 2, and cabling (they said needs overhaul!). Also due for firmware update. Hoping for the best!