Add to it (called piling on here in the states)... 5x7 isn't dead. Nowhere close. And if the world turned upside down and they stopped making 5x7 film, there is always the metric equivalent (13x18). Film holders are fairly easy to get and film in Europe is still plentiful.
It is a matter of preference. If you only shoot color, then don't buy the camera. A 4x5 back on it still puts a too large camera in your kit.
But passing on a Deardorff? Hard to imagine.
tim in san jose