I'm running some tubeless ones and I've been impressed with them so far. They go on easily, are quite conservatively sized (the 25mm ones come up 26mm wide on a 25mm rim), and seem tough - no mishaps so far in approx. 1000 km including some very rough riding in the Peak District.
Subjectively, the bicyclerollingresistance tests ring true: they feel fast and comfortable. They have the makings on a classic long-distance tyre I think!