Hi,

I managed to encrypt the home partition (mmcblk0p2) with LUKS. No need for tricks with MyDocs containers or kill's, symlinks etc. Obviously, not recommended for endusers. It works very well for me.
http://n900.quitesimple.org/crypto/encrypted_home/

This with an encrypted MyDocs partition is practically the closest you can get to "Complete Filesystem Encryption". At least it covers everything important.