I had these on the front and rear of one of my bikes until the front was changed to a Highroller II. It rolls fast and great for climbing and all around use. I highly recommend it for any trail riding. Its like a security blanket. The Minion II's have not let me down at resorts like Mammoth Mountain CA or Big Bear CA.
I'll admit, this tire is heavy. I actually think it is the heaviest tire on the market... That said, in the variable terrain I ride in, this tire sticks tight, corners awesome, and my climbing has improved with it on the back - It is NOT a front tire. I had the High Roller II on back, and this is better - still have the HRII on the front now, and thinking of getting the Butcher Control next. And, even though it is heavy by over a pound more than most tires, I am sticking with the Minion on back... I ride high technical, from loose rock to rock gardens, and even climb up rock faxes... love this tire.