As a VFX artist I'm currently working 99% of my time in ACES. I moved from PS to Affinitiy Photo just for this reason as Affinitiy Photo has 32bit float support and OCIO integrated.
One thing that is missing still is to work in the correct ACES primaries. The closest one we currently have in Affinity Photo is ROMM RGB (ProPhoto).
My suggestion would be to add both ACES (AP0) and ACEScg (AP1) primaries to the color profiles to make sure every software is always working in the same primaries and everything will always look 100% the same.
As I still had After Effects installed and AE comes with ACES/ACEScg icc profiles I installed those and they worked perfectly inside of Affinity Photo so the posibilities are there!