the few times i have worn shoe things on my feets while sailing were near tragic.
without shoes i only broke a toe rather than lose my balance. toes are not bad to break--they recover--losing balance can cause much worse damage than a toe.
i wear no boat shoes--been sailing since 1955.
properly maintained teak decks are proper anti skid---if not oiled, varnished or treated with anything other than sea water. is why they existed.
I think I'd probably rather lose my balance. 9 times out of 10 you just land on your butt and feel foolish. Rather break a toe? Really? Sailing the tropical seas isn't going to be as fun when you are hobbling around for a month.