Having toured using everything from a BOB trailer, to full panniers, to backpack+seatbag+frame bag (etc.); and on roads from the Pacific and Atlantic Coast ACA routes, to Kokopelli and Colorado trails, I can definitely say, I love the capacity racks provide -- but seriously doubt they'd hold up on longer trail routes. So bags for those. Also NZ, Viet Nam, Cambodia, and when travel opens up again, lots more!
My Cyclosys is a great great ride for mixed dirt and road, lightly loaded -- highly recommended for that. Thinking Nitrous for a bit more loading w/o performance compromise for rougher trails, vs. my FS bike (Czar, and 5 Spot before that).
What I'd REALLY like is a high capacity seat bag that still gives me full range on my dropper seat post. I've been using an Oveja Negra bag that has held up well, but only gives me 50 mm drop. Anything out there???