Hmmm, I have mixed feelings. They were great on Snowdon, where my lack of finesse meant hey took a real beating without a problem. I find them fine in mud, and grip reasonably well in the slop. However, for most of my riding (non-mountainous, not too boggy) they are over kill: unbelievable drag!
EDIT: I also used RQ Black Chilli – wasn’t overly impressed with them. Not as grippy as the HDs though, which is good or bad…