I haven't got one yet, but simply having to turn the phone 90 degrees every time you switch back and forth between tasks sounds like it would be quite confusing. Even with two hands.

For a start, it means you'd have to pick it up off a table if that's how you're using it.

It'd means you can't do things as quickly. Just pressing an icon would have to be followed by turning it around in your hands. Imagine if you have to press a few in a row quickly...

So I'd anticipate getting used to doing some things by reading text and icons text sideways... Just because it's quicker than turning the phone around. Quicker, but confusing and annoying.

So because of that, I appreciate why they've settled on making everything run in landscape primarily, rather than a mixture. At least you don't have the delays and eyestrain of rotating the phone or reading sideways when you want to tap through a few different things quickly.

But I do wonder how well browsing things like Twitter, facebook, scrolling through lists of email subjects, etc. can go using landscape.

After all, my desktop and laptop browser windows, and my laptop email window (and text editors etc.), are nearly always a lot taller than they are wide... for a reason. Wide doesn't let you see any more at once, to scan down the text quickly; tall does.