xyz Yes, but you can't click objects and use gizmos to drag them around like in the editor when the game is running. It's quite comfortable not having to use the inspector and change position there.
I haven't tried the addon yet, but it looks really handy. I missed such feature when I came to Godot, but I got used to doing it without it and if I wanted to look around I used some freeflycamera while running the game.