Can you point me to where Scylla claims to be ACID or linearizable? As far as I know there is no Paxos implementation yet, not that Cassandra's LWT implementation is anything to write home about.
Anna paper itself says that Cassandra and Scylla are Linearizable per-key. Yes, obviously Scylla is not ACID, sorry for my loose usage of this term. I was referring to durability, i. e. "D" from ACID.