Just got back from San Felasco running a Slant Six 2.1 rear @30psi and Schwalbe Rocket Ron front @25psi…it’s been working pretty well for me so far. I overinflated last weekend and lost the front on a pine-needle covered downhill turn on Tung Nut. I’d also been monkeying with my suspension and inadvertently turned my fork into something of a pogo stick. Today, though, it was all good. Let me know how you like what you end up with.. don’t think the rear is going to last long and I would love some more grip up front. Guy at the LBS said he was running 18 psi tubeless 😮