I think it's fine. Creative, even.

DO realize it will impact your fuel mileage, and consider removing when out of season. Otherwise, carry on!!! It's your car. It can no longer be under warranty. Go, man, go!

 

i think the first pic looks pretty decent with the rails. cant beat it for the price tho

 

I like it, beats scratching the roof tying stuff to the rails. Test your mileage the wind might be going right over it....unloaded.