What do you think for travelling. I think its a little too big to be easily portable. Not the sort of thing you'd get out on the tube or a crowded train. Also if its heavy and you have to hold it with one hand while using it how does that feel after say an hour ?

I haven't "held it up" for an hour, so I really can't say. I'm not sure I'd want to "hold it up" for an hour while using it.

When I first picked up an iPad, it was a bit heavier than I thought it would be. But I'm now finding the weight to be less of an issue.

Funny you mention a train, I'm travelling on an Amtrak train very soon and will find out.