I went out for a business lunch with two other people a couple of weeks ago. The menu was only available online and you had to order everything through the menu. A bit naff, as either all three of us had to be on the phone or to pass a phone about so everything was on the same order. The ordering app was pretty clunky and although we had a server to bring stuff to the table, interaction was minimal. MarkG is right, if a traditional waiter/waitress had come over and offered a sweet or a coffee we might well have spent more - as it was we couldn't be bothered fiddling about with the app any more and just paid up after the main.
It will become the equivalent of a restaurant/cafe with pictures on the laminated menu.