UPDATE: Shortcut Labs confirmed that all versions available for consumers (Flic Standard + Flic Single) are supported.
Original/outdated post
Ah, right they’re the Flic Single versions (the lights, music button etc). Unfortunately, there are different statements by SL if they’re supported:
Here they say yes: https://github.com/50ButtonsEach/fliclib-linux-hci/issues/77
Here no: https://github.com/50ButtonsEach/fliclib-linux-hci/issues/45
The “yes” statement is newer, so I guess they’re supported now, but I do not own the Flic Single version to test. I appended a question to SL for clarification.
So for now, I’m just 100% sure that the standard Flic version is supported (with the “Flic” letters on the front).