I’ve installed a custom linux kernel on my EV3, known as ev3dev, which allows me to do many of the things that a Raspberry Pi can. I installed nginx and php onto my EV3, and am using it as a mobile web server for controlling Chrimstas tree lights!
The project page can be found here: http://www.ev3dev.org/projects/2014/11/30/TreeV3/
Also, why is the dSwitch $40? Isn’t it just a few very simple components?