The concept of mounting your tomtom on the air vent is very good, however, though, my tomtom has not fallen off the mount yet it does make me slightly worried if I turn the corner too quick or if I drove over a bumpy road the air vent mount would fall off.
The clips don't really hold the device firmly in the air vent and does make me think perhaps they should've made the clips a little more robust, so it doesn't creat that rocking motion when you touch it (gently).
I still have my windscreen suckation pad with me just in case.
The seller couldn't be better, the item was delivered to me within 2 days of placing the order. Fantastic seller.