For landscape/architecture work I honestly I have no idea why anyone shoots medium format.

I was considering a P67 or RB67 but the simple fact I could assemble a large format kit for 1/2 the price, enjoy the benefits of a large negative and camera movements was more than I could ignore.

If you are shooting commercial work or portrait or something where you need a little faster handling or easier flash integration, etc, etc.. well than I can see it but not for parking it on a tripid, with one thumb in your ear and one thumb on a cable release while you wait for the clouds to wander into the right position.