I think an alternative could be mountable encrypted disk images with LUKS and mounting it whenever access is needed. http://freesoftwaremagazine.com/articles/create_encrypted_disk_image_gnulinux/

Interesting read! Shocking it was so well preserved and i had no idea wax was used as journal paper! Equally shocking was it being Latin, I think i misunderstood how recently used it was. Figured it was dead before the middle ages.