Mine are on. After a nasty wipeout in 2016 on the summer equivalent of black ice on a bike trail (fresh sealcoat + light rain + small downhill with a right turn), I refused to ride my bike in colder weather if there was any possibility of black ice. This winter I decided that I'd invest in the gear to make winter riding safer so that I could come up to speed sooner in the spring months by riding throughout the year.
Yesterday was the first time I got to use them on trails that had a light covering of snow as well as some ice on the sections by the roads the trail crossed. I was very pleased with the handling even though I'm an even slower rider than normal with them on my bike.