Winter tyres are good in temperatures less than 7 or so.
Over that, or for prolonged periods over that, the softer compound means you may well be slipping and sliding especially if you have a heavy foot.
It's difficult to decide when to change, it's probably about now, so see how long this cold spell lasts.
I have a BMW 650 on winters and it's spinning all over the place this week. Advice is take it easy, let them bed in as well, see how you get on.
It's the colder temperatures not just snow that they excel at