I bought this exact thing two weeks ago. They turned out to be a bit flimsier than I was expecting but I've used them a lot recently and they haven't let me down and so have earned my respect. Can't go wrong for a tenner.
Got a pair of these too. They're lighter duty than they look but, being light they're easy to maneuvre. Can't seem to get much clamping force with them so not great for glue-ups really.