It holds up well. Honestly, I was concerned about that, so I bought some 45° fittings to run from the uprights to the bottom side pieces if it was to wobbly. So far, so good.
That is sweet! It looks better and more effective than the GC ones too. I used to have one and over time the foam wore away on the bottom bar where the guitar bodies sit which results in a sharp bar digging into the guitar finish. This is much better than that!