Why is batting his main area? I think his batting is his strength, but he is classed as a genuine allrounder now, so he won't be dropped while he performs with the ball.
In response to question, though. He will get runs soon enough. Having him open was a bit silly IMO. Gilly must have been tired or dehydrated or something. I reckon Clarke put his hand up. 2 ducks is nothing to worry about anyway, I don't think there is team in the world who wouldn't love him to play for them.