Really like using Ivar’s Additive Keyer in Rec709. Not very useful in Wide Gamut or ACES from what I can see. Any one else using it in spaces other than Rec709?
I use it acesCC all the time.
Pretty sure it should work well in all colorspaces but you need a good matte
We are smashing ACEScg shots out now using the crok_additive_key. So good 
Are you using it with the IBK to pull the matte?
Sure am @Ben 