That is also a model I've looked at very closely. Good to know that it can do that!
Currently I have a 34" 3440 x 1440, and with two separate docking stations (one for each laptop) and a USB hub for my peripherals that is connected to both docking stations. It's a lot of extra mess on my desk that ideally I would like to cleanup with having everything connect directly to the monitor.
BTW, how is the resolution on the 40"? Can you use it with native resolution, or do you have to do any scaling? Having all of that extra screen real estate would be awesome