Good and bad it seems.
I have been using widget locker for a long time now, and with root access it is perfect!
I use Contact Owner to display all info that I want others to see if I lose my phone (owner name, contact number, and reward). It displays on the swipe-lock screen, but does not give the ability to call.
The reason that I am saying that it seems bad, is that the ownerinfo widget seems to allow you to make a call, which, as it appears (though i could be wrong) would allow someone to bypass your lock screen if you lost your phone (call the number, then hit the home button?).
If i am wrong please tell me, because that is a great idea! I'm worried about security though.