Personally, I'd never trust the only copy of something important to a service provider--especially one that isn't a "big name." (Though even in the case of big names there can be issues with account access, etc.)
ADDED: Curious why people find this a controversial statement. I understand if you have AWS set up with various redundancies but even a service like Backblaze I consider a belt and suspenders-type backup. This is in no way a commentary on the OP but simply an acknowledgement that stuff happens.
Our current setup includes primary backups to BackBlaze[1], and eventually consistent replications to Scaleway's cold storage[2].
We would like to offer an extra replica as an addon in the future.
It's fine in a spoken context as tone can add sufficient extra meaning. If you can guarantee the listener is expecting an informal register then it probably also comes across as a superlative. "I met him and he's quite unpleasant" would usually imply he was a total c*nt.