Went out on Friday and the tires seemed to work pretty good.
The rear was a little slippy on the dry loose trails(thought I had a flat a cpl times), but I think I just had the pressure a little high @ 28psi on the rear.
The front worked well, didn't slip out anywhere.
Was really impressed on a long steep icy up hill. As long as I didn't spin the traction was good.
A friend came over with his 950ADV and had just put the same tire on the rear of his bike.
Looking at the base of the nobbies on his bike I could see 'flexing' lines , he has the stock ADV rim.
I inspected mine(stock SE rim) but did not see any of the flex lines where the nobbies meet the carcass.