Perhaps I'm reading this wrong:
Can't you install this app onto another iOS device to track and/or disable your device after a loss:
"If you misplace your iPhone, iPad, iPod touch, or Mac, the Find My iPhone app will let you use another iOS device to find it and protect your data. Simply install this free app on another iOS device, open it, and sign in with your Apple ID. Find My iPhone will help you locate your missing device on a map, play a sound, display a message, remotely lock your device, or erase all the data on it."
On my Ipad, there is a find my Ipad setting that is ON by default. I didn't think I needed to install an app before a loss.
I do see this too now.."Please note that Find My iPhone must be enabled in the iCloud settings on your device for you to locate it with this app."
Sorry Steve, thanks for sharing this with me so I can be mindful of how my security hypervigilance can trip me up. Sounds like you've got your bases covered.