I tried magic leap once. They really hide it in most of their pictures by using certain angles but there's a tether between the glasses and another unit that's doing the computations. That other unit gets hot during operation.

When you wear it, the window in which the AR is active felt small. Like using really small glasses. And I have sight correction glasses and it felt small even for me, where I'm used to already see everything through smaller windows. It's small enough that you sometimes need to move your head to view things that you'll usually only move your eyes to see, and takes getting used to.