I used some last year, when the rain finally stopped, for general trial riding. I thought they were bloody fantastic, TBH. Very grippy and sure footed, and very smooth and fast
They do, however, feel very different to normal MTB tyres. Almost like a motorbike tyre IMO, in that you can lean the bike right over very easily and the bike seemed to WANT to lean over…. It’s an odd feeling coming off knobblies and you might need some time to get used to it.
Not that bad on wet bits, either, as long as it wasn’t deep clag they seemed to grip anything. I reckon that’s simply down to putting more rubber in contact with the floor!