It looks like no runner has been placed in the slot by his left foot (unless it's hidden) and I'm wondering why given the number of cams on his rack - has the slot been widened out so that it no longer takes a cam?

Just hidden behind my foot! Still takes a WC green (I think?). Took way too much gear up as I’d not done it before and didn’t know what the gear was like afterwards!

IIRC either a #2 or #2.5-3 offset friend just to the left under a little roof once you're stood up and that's it

Yep that sounds about right to what I found, didn’t have to take nearly as much up in the end!