Wow, this must be the stealth member of the Rimowa family!
I've received the bag and I like the layout for my purposes -- I was concerned about the accordion file section getting in my way, but it's fully removable, so all is well. My only issue is that the bag, to me, looks larger than what one would expect for a briefcase, so even picking it up and carrying it may not get me past the GA with it and my Tom Bihn. We'll see.
I have another trip to London in a few weeks, so I'll try to report on how it functioned after that.