I had UD-CA1A-EU model before getting Lenovo’s TB3 dock:
However, I had several issues with it. Mouse, when connected to the dock, kept randomly freezing for ~1 second and then jumped a long distance to which ever direction it was moving in at the time. Keyboard also had similar issues of key press sticking down for a second. And the ethernet connection didn’t work.
I contacted their customer support and they sent a replacement dock (UD-CA1A), but it had same issues and also my external screen kept going to standby randomly for ~1 second, and then turning back on.
I did find out that the freezes occured only when CPU usage was low. Do e.g. “while True: pass” in Python interpreter and freezes stopped, Interrupt the script and the freezes came back.
Note that my dock was not actually TB3 dock, even though it seems to indicate so in the title, but only a USB-C dock. Same way as in the device you linked at. My Eve V did feel somewhat sluggish to use with that dock connected (which I haven’t noticed with my current Lenovo’s TB3 dock), so perhaps the dock doesn’t use the whole bandwith that TB3 would normally provide.
EDIT: Plugable did have great customer support though, even though their product wasn’t what I hoped for.