Does anyone have experience of these tyres?
I think they're more agressive (& heavier) than say RRalfs, and look to be suited for Newcastleton's trails (?)

Does anyone run them?

fast tire that performs well on a variety of terrain, Bontrager's XDX uses small, closely spaced, well supported knobs to deliver superb traction in loose or dry conditions. Siping on the outer knobs improves traction on wet, slick surfaces

Nice volume and fast, but sketchy as **** due to compound more than tread pattern (I think).