I've got one and it's okay for when I'm travelling light and shooting with speedlights only. You really have to remove the front cloth to take it down, but that's not a biggie, it's easy to fit it. The main drawback is that if you're using it outside, it's BIG and you need a meaty stand and sandbag. Which kind of negates the point of a lightweight little brolly-box in the first place.
For indoor stuff (particularly if you're shooting at low power and wide apertures) it's got a really nice quality of light and the egg-crate grid is totally worth having.