I was - apart from the appearance - why choose this stand because no metal parts come into contact with the laptop (could). The product photograph shows
The stand has to be fixed and safely on flat surfaces. A disadvantage, however, that the (transparent) Brück (plastic), which holds the two aluminum feet together, not fixed with just these (feet) is connected. Say, if you often carelessly or even careless enough "far" moves the rack, it can happen that one or both feet from the "bridge" push or pull. Following a safe state would no longer be guaranteed 100%.
When you move the stand, including laptop but a little careful (or not), there should be no problems.