Rock Razors work far better than you expect them to in most situations, even wet. Only real weakness is braking grip on loose ground (wet or dry), which makes them slower overall on some of my local trails. They are very, very fun though.
My experience is based on unfashionably narrow (23.5mm internal) rims though.
EDIT: just saw that Ardent Races (like an Ikon with bigger cornering knobs) come in proper sizes now. The 2.2 version is excellent, but skinny, so I’d love to try one of those too.