I've had literally no problem with aiming in fact aiming is easier. It took no getting used to whatsoever. I changed it because I was doing a video demonstrating a feature on a touch screen but using a mouse and it seemed closest to the touch tracking while doing a screen recording on a phone. I found I liked it and had no desire to go back.
I like the symmetry quite a bit as well as how easy it is to identify things I can interact with (black dot inside) vs things that I cannot (black border). I also really dig the thick text cursor. My only complaint is the resize handle is not super obvious. It's kind of a lemon shape.