I've run 10+ sets of K60s. Mostly road use with gravel/dirt two track and logging/fire roads. No serious off road use. I liked them, got a consistent 12k miles from the rears on my use. I preferred the Mitas E07 Dakar, which was better in the wet. Keep in mind that for a long life tire, the K60 is great for a traveler. I rode them to Alaska and in the Iron Butt Rally. 11 days, 10k miles for me and then a trip up around the Great Lakes before I got home to Utah. I swapped rear tires during the rally to be on the safe side, but ran both of those rears past 12k in the end. Any weather it will do fine. Alaska was every other day rain and I had torrential rain during some days during the IBR. Yes, brand spanking new tire on wet paint lines, it will spin. Any other conditions, if you've got any restraint at all for your wrist, you might not even notice with the brilliant traction control on the Super Ten.
HeliMark is spot on with the MotoZ GPS Tractionator too. Easy 10k miles tire for the rears. Better in the wet than the K60. The rear tires can be mounted in either direction, one way for 50/50, the other for pure dirt use. Fronts only one way. I have not noticed any negative issues on gravel, but haven't run hard off pavement with them. The wife's BMW GSA has them on now and I am starting to notice some buzzyness at 12k+, but mostly in leans from some minor scalloping wear. She's mostly a pavement rider, but prefers the MotoZ over the K60 greatly for it's better wet traction and smoother ride. The Anakee 3s wore much like they do on the Super Ten for her, rears fine, long life, fronts suck with tri-band wear patterns. She's not a brake in, throttle out rider either.