This is truly a keeper. I've been using the cab a bit over a year by now, on nearly daily basis as my main home cab for two lunchbox heads, and it does its job very well. All in all, there are way too little options for vertical 2 by 12s in the market, and this unit testifies why there should be more of them available.
The cab is sturdy, would take a beating and survive, and the sound is very nice: it's tight, it has mass, doesn't sound boxy at all. I'd call the format perfect, since the elements are slightly cross-transposed and the upper one is slanted. The elements are Celestion V30s, Chinese version - after break in they sound like, well, V30s - nothing wrong, but out of personal preferences I will change them in the future.
There are some minor things in the workmanship and components. Obviously the tolex isn't the best there is - however it is very neatly assembled. The handles and corners are metal, but the corner plates are somewhat shoddily screwed - not loose, just slanted and therefore a bit rough looking. The wiring is about the cheapest you get and the wires inside are super short.
Despite my minor gripes mentioned above, may I remind you that the whole cab costs about as much as two separate elements on their own. If in need of pretty light and compact but big sounding guitar cab, buy this one. I'm thinking of getting a second one in the future.