(I got these at a Google thing at DEF CON.) Both work with Firefox on Linux, without any Google software. Haven't yet found non-Google software on Android (Lineage) that can talk to them.
I asked at DEF CON about these, but they said they were not the same as the Titan. Hardware looks to be the same, but they may not have the Titan firmware, but rather the original Feitian one. I...don't actually know how to verify that claim though.