As a Vel'Koz main, Vel'Koz can be a very powerful support. Though i don't like the Vel'Koz Support idea that much, but hey, it works, so be it.
Rakan mid is already a thing, and though rarely i see that, so far it's working pretty well.
So no, it's not reportable, and it's acceptable. They both still have their strength and weaknesses.
I've seen Lulu ADC on ranked, with Blitz, and we got 1st turret in like 10 minutes (i was Vel'Koz support, of course at first i was concerned).
So just chill man and give it a chance from time to time. Don't judge a book by its cover.