That's how i do it! The first backpack i bought from Microcenter had some idiot try and cut out an iPad thing like this, screw up and thought he could just return it... i took it back and had to have it exchanged for a non-altered one... I just use it the way "with the birds" does... keeps it clean and simple and secureNice solution, thanks for sharing.
This works for me. Ipad, glare shield and a landing pad (for use on the beach) all fit perfectly.