Just got My Checkpoint ALR 4 last Week. So far I did 2 50km off-road rides a commuted to work with it a few times. I really like the bike and I'm quite surprised on how smooth it feels.
I usually ride a rigid 29er with wide rims and 2.4 tires off road, the Checkpoint on the stock 35c Kenda tires is not much rougher, I just have to be more carefull on rocky descents.