About this deal
It looks like the Kinesis Advantage 360 is really intended for you to use it with two hands on home row. Yes, all of this is in service of making the act of pressing down on a couple of buttons feel a bit more pleasant; it makes about as much sense as, say, making a bunch of miniature gears turn to tell time imperfectly.
You can still use layers even though there is an extra row of keys so not sure why to remove keys other people rely on.The difficulty comes from manufacturing such an oddly-shaped case, and how the printed circuit board (PCB) has to bend to accommodate the concavity. The Advantage360 hardware is a solid upgrade over the Advantage2, which itself was more of an incremental improvement over the original Advantage. I have the delete key (which is next to it in the thumb cluster) act as an extra Ctrl key when held down.
Over the years our users have clamoured for an open-source option for their Advantage so for those folks, the Pro will be a welcome sight.
Especially now that they have more than two layers, would love it if they backported that to the Advantage 2. I made a split keyboard that put the num pad in the middle since that space is normally wasted, but it wasn't very nice to use.