Mine have arrived and as expected, they are so good it's almost like a non-event. When you get a new iPhone you can spend hours messing with it and enjoying it. But when you get new bluetooth headphones, the worry is you'll have to spend hours making sure they pair smoothly etc.
These really are as simple as the reviews say. Super impressed. Very much a case of "it just works". I'll give them a proper test during my run tomorrow, but so far so good.