We had Pirelli AT+ on our KL Trailhawk for about 2 years until we replaced it with the WK2 - and they were FAN-FREAKIN-TASTIC MATE!!
In spite of their offroad chunky appearance and the fact that they bag out a LOT even at higher (road) pressures they're quiet on the road and handle entirely like a road tyre. Very comfortable, very solid / secure feeling especially in the wet - and handle great. They also seemed to be wearing very well which surprised the heck out of me.
We never really tried them out hard offroad, but on some fairly rugged dirt tracks they were very comfortable and had no issues even without airing down.
I've just put 275/55R20 AT+ onto the WK2 - and so far they're feeling and handling as absolutely brilliantly as the ones on the KL TH.
https://youtu.be/pD1B9EGxEM8