I have one. Not the sturdiest cab in the world. Its heavy, and looks/feels nice, but doesn't handle touring well at all.
Took only 2 times of loading in/out with light rain around for the carpet to just about fall off the back. I set one on a thick power cable by mistake and once the home-made cab and 6U rack were on top I heard a "crack" and the bottom piece cracked along the edges (that piece kinda acts like a port).
It sounds ok, but I've heard better. Its loud enough for practice, and small bars with a 600 watt RMS stereo PA amp behind it (sans-amp rbi into the amp). You'll need at least a second cab for anything over a 80 capacity venue. If you want to shatter the earth, or play outdoors, look for something else.
That being said it was the best "store bought" $300 cab I could find. Its the only one that cheap that I could find with a speakon and 1/4" on the back (and not just two 1/4"). Filling the 1/4" jack with silicone made it sound a little less muddy down low. BTW, If you're not using speakon, start now, they are great. partsexpress.com has the ends and 2 conductor cable at great prices. I made a 3' and a 6' 12ga cable for around 25$ (including two jacks to convert the amp from binding posts to speakon). No soldering required for making the cable.
I still find that you can make a better one yourself for a little over $400.