For suction cup ...
... So I can not give qualified opinion, with regard to use in the PFW. What I can say is that he really holds bombproof at the window. The weight of the iPad itself is anyway not a problem for the tripod, and also when opening / closing the window (even with an engaged unit) or if accidentally bumped while the operation of the fixed stop is not at risk.
The variability in the setting ...
... Is great. Through the joints, especially the ball joint, the holder can be individually adjusted to the size of the loaded device, the angle of the wheel and to the desired viewing angle of incidence of the beholder. So are highly easily and landscape-oriented pinch possible with a contact of the device is placed on the retaining arms only in landscape mode.
The clamping device ...
... Holds. For my purpose of maintenance is more than adequate. The tablet can be firmly clamped by the variable in small steps tensioning mechanism and is due to non-slip padding on the four receiving arms not threatened to scratch. Without having tested it, I suppose nevertheless that this clamping device performs its service without hesitation even in "normal" car trips. Where, however, something has to be careful when inserting the device is in the strength with which you want to have pinched it. I do not happen, but I do not rule out that one of the relatively insensitive indeed, but still a little thin geratenen Kunststoffärmchen can break. Since you would have the clamping mechanism can make a little clever, for example by a fixed locking, by the voltage during closing not only increases when it's a bit even. Still, if you've done it once, it should fold all subsequent times.
My Conclusion ...
... Is that it is the tripod is a great universal tripod, which ensures many settings and secure fit, and at a great price-performance ratio.