From the SmartThings perspective, it might be a lot like the hue tap switch. That is, it could control certain zigbee bulbs, but you couldn’t mix-and-match zigbee with zwave with Mode changes the way you can with a button controller or a Z wave switch under smartthings.
And it may not update status to the smartthings hub.
It could still be great for certain use cases, but not the wallmount button controller we all want.
On the other hand, if it works like the Smarten IT three toggle zigbee device, that would be fantastic! We’ll just have to wait-and-see.