I noticed one of those last weekend, but I forget exactly where... I think it was in the beaches area. I was playing with my bike while standing over it during a conversation and idly stuck the tire in the grate while fiddling around and then all of a sudden I realized that it was the evil wheel eater style ones. Sometimes I get afraid I'm going to taco my wheel track standing near the diagonal ones because my front wheel tends to be at about that angle.
Anyways, any news on safety meeting? Otherwise I've got some shopping to do.