Vibram can be real slippery on wet hard rock: I’ve taken dislike to it here in Hong Kong.
I find softer rubber far better; wears out faster, but at least doesn’t seem you’re ice skating on even damp rock.
Had Teva sandals with spider rubber recommended, by friend who runs up hills, inc via bouldery stream beds; great if warm/hot weather; found that still somewhat slippy on wet rock, but good. (Way beat some reeboks I once had, that were slippery even on wet downhill concrete path; I tried their website, asking if it ever rains on Planet Reebok, but no reply.)
Columbia Omni-Grip grip working pretty well for me, too, for hiking type trainers.