I’ve got one, about three years old now. Broke the stock wheels, and now have some Shimano (metal) and Specialized (carbon) 29-er wheels I use on it.
Used mostly as a road bike, but have run it around the Ronde van Vlaanderen, raced cross on it, and had it off road a fair bit (though not recently).
Plenty of pictures on my blog, and in a few weeks it’s off for LEJOG.