For a tubed tire the Clement Xplor USH 35-622 is a great all around tire with a flat center tread and outside knobs.
Anyone see something like this tubeless please let me know...
I just bought a Jamis Renegade with this exact tire. I tried it at the listed minimum of 65 psi and it was still a little harsh. I dropped the front to 50 psi which was better. I weight 185 lbs - what is the minimum pressure you run? Also, can this tire be set up tubeless with sealant?
For the OP, it rolls smoothly on pavement. I haven't had a chance to try it on gravel yet.