I have two and I use them every year to roll out into the hallway by my classroom. Students get dressed in the hall and then come in for warm-up. (My costumes always slip over their clothes.) This keeps some of the chaos in my room to a minimum.
The only thing I don't like about this set up are the wheels on the rolling racks. They aren't permanently attached, so they have a tendency to come out. I used a bit of hot glue but it doesn't permanently resolve the problem.