Im terminating my trial.
CloudBerry on Mac STILL has the issue reported 3+ years ago and promised as a fix many times - it encrypts the file contents, but not the metadata - so as am example I can go onto BackBlaze B2, browse my CloudBerry backup and see files called bitcoin.wallet, bank details.txt. These are made up names obviously, but they illustrate that its not full encryption as most people understand it.
In comparison, doing the same with backups from Duplicacy, Duplicati, Arq, QBackup - and in fact every other backup system I tested that supports encryption - this is not the case, I seem random directory and file names.
So - game over. Again.
Oh and performance is strangely awful as well: been doing a trial across all the usual backup candidates (QBackup, CloudBerry, Arq, Duplicacy, Duplicati etc): had to abandon the CBB backup to BackBlaze B2 after 9 hours as had only reach 50% completion - in comparison QBackup and Duplicati did this in 50 mins.