It looks and behaves like PS (a clone of some sort), hadn't had to re-train my muscle memory much to do the above prototype.
The thing that I really liked initially was the compatibility with existing PS plugins (e.g. Google Nik Collection).
There have been some mouse click / selection issues on my system, which I haven't yet troubleshooted as I'm busy programming. I didn't mind them in the trial, but I grew tired of them afterwards :)
BTW Serif, the company that develops Affinity Photo, is UK based just like XenForo.