One thumb typing keyboard for mobile from microsoft

When the first keyboards were invented we used to sit infront of the devices and type them. So, a horizontal layout would make sense that way. Over time we realized that it is not so good from an ergonomics point of view and split keyboard claim to be easy on the nerves. But all this is when the typing keyboard is based on a platform.

Imagine typing on the same keyboard while we are holding that keyboard. I sounds so stupid. right ? Right, but we sticked to the same idea for too long. We hold our mobiles in hand and try to follow the same layout. To top it we hold the mobile in one hand. So, whats the solution when you are holding the keyboard itself.

I think the split keyboard in ipad is a good idea to start with. We generally hold it in both the hands and splitting the keyboard closer to the grip area is a good idea because we can type without loosing the grip. But still the keyboard is vertical. Will it not be hard on the nerves ?

I think microsoft nailed it this time. They have a curved keyboard with which we can easily type all the keys without loosing the grip. I belive that this model will be easy on the nerves too. This may not be a game changer to make people go crazy and make them buy windows phones. But it definitely is a good idea. When will everyone copy this idea and start a patent war on this (tounge-in-cheek) ?
http://wmpoweruser.com/new-arc-soft-keyboard-may-be-coming-to-windows-phone-8/