I was skeptical about this whole "door opening thing", too. And I purchased this, expecting to hate it... but I absolutely love this Samsung DW.
Since there isn't a heating element, a fan goes on near the end of the washing cycle when the door opens just a bit, allowing the condensation to escape. And no... your kitchen won't get steamy, in fact it's so quiet and minimal you won't even notice (unless you happen to spy it in action).
The 3rd top drawer is a wonderful attribute, too. Your silverware will come out sparking every time.