Just got mine.
I agree once around the neck one easily forget they are there, the weight is spread around it is easily to notice not present. The weight distribution seems intelligently sublime.
The odd thing is the fit in the ear, I usually have the default fitted medium size buds on but for these I had to move to the larger non-default supplied size to get a good fit. So the buds seem on the smaller than average size.
Pairs with Chromebook (what I usually use around the house) easily, which not all BT devices do (good).
The BT distance is the best ever of any of my devices. Oooooh....
One surprise benefit of this design is the one-ear method works better than I have experienced, because the weight is in the neck and little on the wire-bud, means I can use one-ear to keep the other-ear clear to hear surroundings, there isn't the wire dragging down. So I can be one-ear and moving my head around and the one bud stays in place. Good.
I have another horse for a different course.
Watching BBC News at Ten on Iplayer and works ok....