I agree with the other two, save your money!
I have overshoes and use them daily on my commute and have so far purchased Altura (poor fitting and with velcro all over the place), replaced them with Endura (heavy duty neoprene, but with velcro bits that came off, and a rim that did not hold onto my northwave shoes) useless off road and just created something else to catch mud under. Finally I have a pair of Shimano PRO NPU+ these are the best I have ever used, but they are on their way out and will not be replaced.
For the price of 3 pairs of overshoes - I could have got a nice pair of Gore-Tex boots, which I would still be using now.
Ironically have a pair of Northwave Road style Winter Boots and these are great - I just regret the fact that I did not buy the off-road version and just change my pedals in winter to SPDs.
I will, though, be buying a pair of off-road boots in the future.
Hope this helps,
Roger