The lights arrived this morning. Sadly you can only chain two together rather than four so I need to plugs rather than one. They put out an okay amount of light.
There's no way to hold them properly at the moment but I figure (light stands aside) that i'll get some double-sided velcro to attach them to some sort of frame.
In the interim I borrowed Max's face and got him to hold two of the lights either side of his head. I then focussed and put it on a ten second timer. I then held the other two.
It seems on first go to give quite a pleasant overall light.