With the Vision Pro you can sort of see the real world in nearly real time with some distortions because the cameras don't match your eye positioning, and the dynamic range is clamped to what is supported by the cameras and displays, and everything is at the same focal distance, and your peripheral vision is limited. It's definitely not the same class of device as what has traditionally been called AR.
A small number of people have been to varying degrees living in VR headsets and they've been alright, but it's not for everyone. Besides the weight and having to manage the battery, you run into issues like the cameras having difficulty in dark environments or when objects are very close. After enough hours the motion sickness goes away.