FWIW, I bought one of these during the kickstarter. It comes with a short USB-C cable so you can either use it in less-attached mode OR with an iPad Pro or other USB-C device. So far, I like it. It's solidly attached when in use, and not difficult to detach. My only wish is that the HDMI was bidirectional so I'd not have to drag my Camlink 4K along as well when recording video. However, I expect that was probably left out for cost reasons...
I'm using it on a 2018 MBP, the four-TB-only model, so it adds a bunch of functionality.
[GryphonMD]