I was in Symths head office and they have one of these in their reception. Looks like they got one in to evaluate it to see if they will stock it or not. As I had the young lad with me and it was powered off I didn't get to have a proper go at it, although my 3 year old poked at it enough!
My thoughts....it's low/small, as in very small and very low. It's almost like a bartop sitting on a fairly small base.
Height wise I'd say it came up to around my elbow.
Skerries earlier post/video link on size is important to note, the video below shows them and it's very easy to not notice but they are sitting on a high platform that makes them seem much higher.
Link to video
Cab wise it does look well though, it was the Street fighter cab and art work wise it does look well. The stick/buttons are as you would expect, but each players stick/buttons seem very close together. So 2 adults playing will struggle with it.
It's does have a fairly poor looking on/off switch and another poor looking high/low volume switch that sits above the controls
I did get a picture of it with the young fellow in front of it, I'll try to post that later