That's what my husband wears. Its a lot more reflective than my, quite expensive, NightVision jacket, but not so waterproof. He says its just fine while he is waiting for his water-proof hi-viz jacket to arrive from Cycling Active for subscribing for a year.
Its not waterproof, its showerproof and definitely boil in the bag ...i get one every year by cancelling and resubbing.
It will keep the rain off but do not expect it to keep you dry in a proper downpour and if like me he rides hard then your liable to be wetter from sweat than rain.As it costs the same as the mag i regard it as ok.
I had been using it as a top over a SS jersey but its hard to control temperature and when you wash it often enough then the water repellent coating wears off .
ATM i am using a runners gilet from decathlon as it was at least half the price of a cycle specific one, or ...
http://www.cycle-clothes.co.uk/cycling-gilet-showerproof-windproof-hiviz-yellow--med
Imho carry on using the vest and carry the windproof for showers or when it gets really cold, currently using a base layer with a long sleeve jersey with a gilet and i am ok at 6 am , although i know everyone is different.