It's a cool feature but yeah, I don't think I would use it, I think it would be very hard to get used to because we're so used to straight keyboards.
Check out Luke's review of the Dell Latitude 10 Windows 8 tablet.
The Windows 8 phone could see the use of a curved keyboard to have the one thumb keyboard. This is a new idea that could make it easier and be a key feature in the sales of the Windows 8 phone.
This is not something that is known yet but a leaked picture would suggest that is an idea to be used in the new Windows phone. The idea could make it much easier for people to type with one hand whilst doing other things like carrying the shopping.
I am not sure if I would use the feature myself so hopefully they could have the normal keyboard also.
Do you like the look of this phone keyboard?
Source : CNet