I took some pics of the locking mechanism- it couldn't be more bulletproof. I hadn't quite figured out how it was going to work until mine got here. The entire width of the handle slides in a channel and acts as a giant deadbolt.
Unlocked:
Locked:
It fits in a Pelican 1550 case perfectly- the lid closes easily, but it's a nice snug fit. There's plenty of room around the sides for more stuff:
The feet of the EIT fit in the channels and rest against the crossribs on the lid, so it basically centers itself if you want to use the case as a riser. If this wasn't planned, it's pretty amazing luck:
Here it is from the front:
Thanks Watson!!
[edit] Oops- the pics didn't embed so well. Here's a link to my Photobucket album if you'd rather see them there:
http://s1222.photobucket.com/albums/dd483/crabtacular/