Nawrockiwrote a review of Schwalbe Rocket Ron Addix Tire - 29in on August 1, 2019
Familiarity: I've used it several times
I have used the 27.5x2.6 RoRo Addix with great success here in the Wasatch Back - Park City area. Fast, long lasting and grippy. But, the transition to a 29x2.25 did not work out for me. It's slightly undersized at about 2.2, which is fine, but it doesn't have the durability of the same tire in wider options in the 27.5 version. RoRo's wear fine in 27.5, as do Nobby Nics in 27.5x2.35&2.6 and also in the 29x2.35 version. There's very little penalty for going to the NoNi in the 29x2.35 in speed or weight and they wear and grip considerably better. I'd go with those instead.