Interesting question.

I'm doing the VG's to see if they actually help the back window and water buildup. I noticed the OP did not lay them out at the angles the company recommends, which I plan on doing. They may or may not stay, especially when I get the rear spoiler, but its a cheap and fun experiment.

 

Pics on mine, install was quick and easy using templates.

I actually like it. I have a factory spoiler on the way, will see how it all looks together.

 

Looks like a papa shark and 10 baby sharks all swimming in formation.

 

Its def an either "love it" or "hate it" mod for sure. I hope it looks cool with the scion spoiler, if not theyll come off. I also hope it rains before the spoiler goes on, so I can see if they actually do anything or not.