I commute almost every day - year round, in the normal Oxford rain seal stuff and its great - I only have 3 criticisms of it.
1. Isn't breathable - so if your warm you generate a lot of moisture inside (its like wearing a bin bag) - but as a counter to this, I wear it day in day out and get
at least 2 years before it starts letting in water from the outside and needs replacing, and when it comes to that, its cheap. I've tried all sorts of extremely expensive bike jackets and I'm still firmly convinced this, with a fleece underneath and possibly thermals - is the best way to stay warm and dry on my commute. It's easy to take on and off as needed too. I will however concede protection in a crash is obviously not great. If I'm going somewhere that not just my commute, I'll put my "proper" bike jacket on with this over the top. Another point for it, given its not breathable - its extremely windproof so keeps you warm.
2. The zips on the pants are a pain in the arse and no matter how careful I am, ALWAYS trap bits of the folding part in it then I have to faff about with it for 10 mins freeing it.
3. The velcro tabs on the ankle section always come off after a bit of use....
Otherwise: Solid, Cheap, Great bits of kit. Given there is now a thermal version I would absolutely give them a try for my next ones instead of the standard ones I have.
A solid 8.5/10 from me for the Oxford rainseal - hope the thermal version is as good (or better!).