As a collective yes, individually not at all. Problem is they have no connection with the audience because they haven't really been able to build it.
They used to do the "believe in the shield" promos and then they slowed those down, Ambrose and nobody else is giving a spotlight or reason to care about them outside what they do in the ring. People are into their work though but their entrance does leave a bit to be desired.
I have seen shield signs, not a lot of them but I've seen them. The difference between them and the Wyatts is that the Wyatts are all about Bray Wyatt..full stop, I don't think anyone cares about Harper & Rowan like that. Also the Wyatts have merchandise, the hats, the sheep/goat mask, the shirts and stuff but what merchandise does Shield have?
I believe they should be more over than they are but they are over.