Hi all, good news. Thanks to wentam42’s workaround found here (see comment #7), Zwift in Linux is working using Wine.
I was not able to get sensors to connect directly; I’m using a BLE PowerTap SCS and the extent of Bluetooth support appears to be immature. Connecting using Zwift Companion works however.
Here’s an abridged video showing the process:
(sorry for the double-post; I could not find a way to edit my previous reply)