Yes, there's too much data leakage from encrypted volumes (files, partitions, external media) to make them safe. See the discussion I had with someone here: http://dkn255hz262ypmii.onion/index.php?topic=71415.msg686230#msg686230 I believe full disk encryption is safe as long as the device isn't on when LE arrives, so they can't extract the encryption key from RAM, but realistically speaking, the LE that pursue a drug buyer or low level drug dealer won't be sophisticated enough to do that, so I believe full disk encryption is safe in our threat model. Although, as discussed in the link above, an OS on real-only media or in a VM with FDE are the strongest protection.