I finally got around to turn this on and its great how freely you can move while attacking.
But there is a big issue when walking and wanting to look around with left click, you can't. Only with autorun it is how I want it, and activating it every time is annoying. Its especially bad when flying on a mount gathering or something, you cannot look down and it feels weird too how slowly it turns you.
So hopefully there will be an option for this in Endwalker.