I had a 27.5x2.6 version on the front of my Pivot 5.5 for a brief time. I live in SWPa and it worked well in the loam of eastern woods and in soft/muddy conditions, when things dried out and it was hard pack I felt the knobs flexed too much. Now I'm not a racer but I do get after it a bit. It also was quite under sized, on an i35 rim it blew up to 2.4...
This was 3 yrs ago. the newer version may have changed in volume and compound, IDK.
This was 3 yrs ago. the newer version may have changed in volume and compound, IDK.