I find that the two space buttons get in the way. Given the swipe- space feature i think they are pointless.
What about adding an optional shift/caps lock button in place of the space buttons?
One of the things I have enjoyed most with my Galaxy Note phones is the additional rrow of numbers. Much easier and overall leaa conplex to use in my opinion. Also, predictive text would be helpful.
Overall I enjoy the layout so far. But having used swype for the past few years, and using a dvorak keyboard makes this an interesting learning curve.