I don't like them at all and don't understand the love affair except for one reason, they are short which would be beneficial to someone with a short brace and a speed bow. Still I'd only use them if the fetch hit the rest before it dropped.
High profile and a very stiff vane. Not for me. Just for fun and giggles imagine a fletch like balloons on the end of your arrow. Blazers are like that, big and bulky requiring a huge window to go through.