Time Machine, multi-user, with quotas. Best solution?

The “out-of-the-box” Time Machine setup (http://kb.netgear.com/app/answers/detail/a_id/22810) is good for a single-user environment, but keep in mind that any user who can make backups, can also access anyone else’s backups!! That’s a substantial security concern, so the setup I'm using here avoids that problem.

From what I’ve found, this is the best way to setup Time Machine on a ReadyNAS in a multi-user environment:

Requirements:

Firmware 6.1.6 or greater.
OS X 10.8 or greater.
User accounts setup on the ReadyNas for each user who will use Time Machine.
You can also turn off the TimeMachine backups in FrontView if you want, it is not used in this setup.

Setup Steps

1) ssh to the NAS as root
Enable Ssh if it’s not already enabled.

2) Edit /etc/netatalk/afp.conf

Find these two lines:

 [Homes]
basedir regex = /home

And immediately after, add these three lines:

# Added these two lines to use home directory as Time Machine destination:
time machine = yes                          
vol size limit = 1000000 # Limits Time Machine to 1TB

3) Reboot the readyNAS (or just restart AFP if you know how to do that).

4) Connect to your home directory on the ReadyNAS via afp on your mac. (Open Finder, click "Connect As..", enter your username and password)

5) Open Time Machine's preference and configure it to the home directory as your backup disk (it will show in the available Backup Disks screen automatically).

Can you guys test this out and see if it works for you as well? Open to any suggestions here.