I have some of the rooster hotsocks and a hot top for sailing and they are very warm, but you have to wear something wicking under them or you would drown in sweat. They are also quite difficult to get on and you would need shoes at least a size bigger, but they are very effective and if I were doing a snowy ride I’d wear them.
I have some gloves like them, neoprene with a rubbery lining from Decathlon and if you wear them with no liner you can pour maybe 30ml of sweat out of them at the end of a ride.
As for latex socks, I have them on a drysuit and wouldn’t want to wear them otherwise. You would need warm socks under them and they add no insulation but are completely unbreathable so your feet end up a little wet regardless. They are also very sticky, so difficult to get into shoes which means that they end up tight and restrict circulation making feet colder.