I believe Jude said they are the best he's heard and he's heard and/or owns those. "best sounding, most revealing in ear, ever" I don't know what more you guys are expecting until reviewers and consumers have them around long enough for proper compares.
Anak and Jude are familiar with those pairings etc and they both seem enamored. Perhaps we should wait for official release. I'm certain that plenty of impressions will be here when available. I doubt you'll get much in the way of answers before that.
Not really unless they decided to make the amp balanced front to back and even then, there's no real advantage. Balanced is way overrated for consumer audio.
What I did yesterday: Listened to Quad 57s and 2812s. Fixed a 988.