I've been using it for 6 month and it makes your work more comfortable. It has wheels and breaks on them, so you can fixate the rack. I have Allen & Heath ZED18 mounted on the top and reverbs inside, etc. This Rack makes work with mixer easier. Just open and push power supply on and you are ready to rock!
Besides wheels, it has handles for transporting.
One thing that is not so comfortable that it has small hole on the back doors for wires. I have my multicore cable, power cord, monitoring cable going from the rack, so because of the small hole I cant close the beck metal door. You will need to make a hole bigger if you have a lot of cables.
But in Total it makes your system compact