I built my board a while ago and it's seen quite a few gigs without any hassles.
It's the best thing I've done as setup and pack up is a breeze.
The switches switch between a cable input (on the side of the board) and my wireless. The other switch will switch between the normal monitor outs (to a power amp input for stage) or the built in stereo power amp which I intend to fit inside the floorboard.
That's a beautiful board, great job.