Once you have finally created a good working template you better hope that you never need to add or delete an item from the lockdown policy. If you do your going to have to go into the the HTML and manually add/remove the references to the correct lockdown tag. You better hope that it doesn't screw up your layout. Or worse you decide to use a different device with a different screen size! You may as well start over....
If your using MobiControl and want to check it out, or are just interested in device orientation through CSS, or any of the other tweaks I used. Check it out at https://github.com/mobilebob/Soti_Dynamic_Template