Had a set for a couple of years back in the day, pretty much wore them down to nothing in the end. They were easily the best of the bunch back then, but I think by modern standards they’ve been left well behind.
Certainly I remember being able to make my V-Brake (very first Shimano XT ones in 1996) equipped bike make the front Dart break away under heavy braking in a straight line. You wouldn’t get that with decent rubber these days, you’d just do a massive stoppie! That and I remember whilst the Smoke was pretty grippy, it wasn’t the quickest tyre by some stretch.
Oh, and they were fairly puncture prone.