You know? This homemade thing looks silly at first sight, but it's really not so bad. I'm looking for a mount that works on the AC vents and can be easily mounted and unmounted (I don't always want the phone there and I don't want the vents covered all the time). So, this thing is easy to remove and seems more dureable than most of the cheap chinese mounts...
I think I will give it a try... Maybe you can cover it with some rubber hose so it looks more uniform and get some springs to make it look better.