I was looking at them. I think it is an interesting idea, however I still think that they will have a different market than Android and iPad.
The Windows 8 tablets will have to be more powerful IMO to run the OS. This means that they will either be much heavier, or they will not have a long battery life. I also think they will be a bit more pricey than the iPad and Android tabs.
That is just my take, we will have to see how it plays out.