I think that's particularly handy for interactively, remote controlling test&measurement gear. I want one!
Great hardware for the money, but it sure is a little annoying to use. Don't forget to hack in the options if you haven't already!
I haven't had the pleasure of using their desktop software yet. I do know that sigrok/pulseview has support for the DS-series, but aside from running it to make sure it could talk to the scope I haven't used it much. It doesn't look like it does much more than just duplicate the screen of the scope, but it might have more functionality that I am not aware of.