Got mine a few days ago (Gateron Clears with black case, white LEDs, and the grey PBT caps).
It pairs great with my Surface 3 with Win10, and hasn't shown any pairing issues despite sharing a Bluetooth connection with a MX Master. Admittedly, I only do typing and web browsing, so if you wanted to game with it, YMMV. Build quality is solid, and the keyboard itself is just very nice to look at. Haven't had any experience with the battery life so far, but if other reviews are any indication, that shouldn't be a problem.
I was hoping to use this for a portable setup, but it is pretty hefty, so I may not be carrying it around as much as I would like. But all in all, this is a great drop and I recommend it.
That being said, I'm not in love with the Gateron Clears (I use Matias quiet clicks for my daily driver, and love the higher actuation force and tactile feedback). I'm re-joining this drop to get Cherry Blues and need to get rid of the one I just got. If anyone doesn't want to wait for the group buy to complete, and is located in the ConUS, send me a PM.