Dawes makes it look a lot easier. Going on memory, I think he stems past some of the places that appeared hard to chimney in the other video. You get a sense of how slick slate is at one point when Dawes' foot actually skids while loaded.

It looks like you could heel-toe in the back of that dihedral, by the way, but that is looking at it with granite/sandstone eyes...

The moment when Dawes suspends himself on opposed arm cross-pressure is cool, perhaps a bit of a party trick, but it is absolutely nothing like an iron cross in difficulty.