Nah, it's not like that. It's more for a residential use case, in that a person calls a charity for domestic abuse, and the abuser sees the call in the logs or bills; Ofcom regulation in the UK. The billing systems we have a fine for it, it's just allowing users to see the FusionPBX CDRs as well might be an issue.
What I may end up doing, is running a cronjob and purging records probably via Mikeme's suggestion of the direction. I'll just set the direction to 'sensitive' or something and every 5 minutes give it a clean...perhaps even directly just purge the sensitive destinations directly instead of setting the direction var.
I was really hoping there would just be a FreeSwitch var to say 'don't log this please!'