I still maintain that my rigid Plus bike, a Trek 1120 running the original 29x3 Chupacabras, is excellent enough for the roughest gravel I've found, at around 14 psi. And I've noticed that people who don't like the wider tires tend to use a lot of emojis. I'm planning on going to semi Fat on my trike's front tires because I don't want the weight of the front suspension. It will be worth buying another set of wheels if they are good enough so that I don't need to buy a whole new trike with FS.