@tcandela , you are right that if FV is not on, the enable FV for user option doesn't turn it on. What you could do is first, if you didn't already, create the Configuration Profile, "Filevault Recovery Key Redirection."
Once that config profile has been distributed, you can create your policy for the MeLocal account but don't check Enable User for FV2. In that policy, add an after script to turn on FV for MeLocal (assuming you know the password for MeLocal).
#!/bin/sh
echo '<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Username</key>
<string>MeLocal</string>
<key>Password</key>
<string>MeLocalPassword</string>
</dict>
</plist>' > /Users/Shared/filevault.plist
fdesetup enable -inputplist < /Users/Shared/filevault.plist
rm /Users/Shared/filevault.plist
If you don't want to store the password in the clear in a plist, you can use the defer option to have you or the user enter the password at next login:
#!/bin/sh
fdesetup enable -user MeLocal -defer /var/tmp/fvkey.plist -dontaskatlogout -forceatlogin 0
You would just need to have another script run later after FV2 initialization to remove the fvkey.plist file since you don't want the key stored in the clear.
Hope this helps. Also refer to https://derflounder.wordpress.com/2013/10/22/managing-mavericks-filevault-2-with-fdesetup/ for further help.