@blendergeek: Thanks for reply. Yes, it looks like basic bluetooth function will work. Do you know, if they have fixed the “bug”? There are only a few cards on the market with free drivers.
@stefann: You are right, that was a different question, but maybe the same answer. Basic bluetooth function should also work in PureOS with this card. In case of the ath9k driver: If you are are happy with an average throughput of 54 Mbit/s, that’s ok. If you prefer gigabit-like experience over WiFi, than actually you better switch to the non-free driver.