I've run Minion DHF and Crossmark 2.1 eXCeption/2.25 tubeless. The 2.1 Crossmark was fine for local stuff but i slashed it open on the Skyline trail so went up to the 2.25 and that was alot tougher.
Now running a UST wheelset with Igintor 2.35 LUST/Crossmark 2.25 LUST. Did have a 2.1 Crossmark on the rear intially but that recieved a tear through the casing under a side knob and just wouldn't seal so thats now on the hardtail (tubed).
2.25 Crossmark LUST is just over 900g so not lightweight but it's on the full-sus which i ride in rockier/rougher places so feels great for that kind of thing. It's still a bloddy fast rolling tyre for it's weight and width though.
BTW I reckon the 2.35 Ignitor/2.25 Crossmark combo are pretty evenly matched width-wise.