I heard the apparently controversial Zero One 01hers Vulcan & Valkyrie has been subbed, but by whom? Can anybody please point me in the right direction?

Has anyone ever subbed Kamen Rider vs. Ultraman?

Not that I'm aware, but based on a synopsis I read of it online, I just watched it raw. You miss basically nothing by doing so, too. As apparently the first half of it is just recapping Ichigo and Ultraman's' powers. The real meat is that awesome action sequence that is the second part(and there's like no dialogue during it too).

Oh, there's no dialogue? Sweet! Shame I'll miss out on the interviews but hey

https://earthlysubs.wordpress.com/20...vice-releases/
Well bad news, JawsSubs have dropped Revice. So that means it's either a choice between a quick but inferior subs or longer better subs that could potentially go MIA.
Decisions, decisions.

So I take it GenmCorp is now MIA again, since they haven't subbed episode 5 of Revice and there's no word on Twitter.
Dude shouldn't have bothered if he's not going to commit to it like he did with Saber.

GenmCorp subs for Revice 5 and 6 have popped up on nyaa, so interpret that as you will.

They released scripts for them but I reckon someone else did the work. They've gone radio silent for nearly 2 months now.

Has anyone tried the GeoSubs release for Revice I've seen on Nyaa? Are they any good and how do they compare to IzuSubs?

I think there was a Twitter thread pointing out how bad a translation GeoSubs (or another group) were by comparing them to IzuSubs. And given what I’ve seen of GeoSubs’ episode 25, I’m inclined to agree with that thread.