Is the Blue Knight one of the rarest skins in Fortnite?

Is the skin one of the rarest skins in Fortnite? It was in the first Battle Pass ever in Fortnite. And do you think that it will come to the shop at some point? Fortunately not yet.

Nope gives a list of rarer ones much less often, but I don't know if that's true.

https://mein-mmo.de/15-seltensten-skins-fortnite/