Oh damn! That's impressive. I will definitely do some more research on this!

Having a TB3 core with graphic power at home that I could just plug in if I need the power, and otherwise carry a small lightweld MacBook with me sounds too good to be true. If it's daisy-chainable I could imagine quite a nice dock-setup with external display that could turn a small MBP into a work-horse whenever needed. I'm intrigued.