Cerberus, Where's My Droid, etc

[PLCSP]

Has anyone used "Cerberus" or "Where's My Droid" for the HTC EVO LTE yet? I'm thinking about buying Cerberus ($4 one time payment), and I'm wondering if all of the functions work? Supposedly, you can take pictures of the person holding the phone when they try to unlock it, lock/wipe it, locate, and do all of the other features the other security apps have.

Cerberus is appealing to me because you can put it on up to 5 devices, so I can put it on my tablet and wife's phone. SeekDroid wanted to force me to upgrade when I added a second device. I would have upgraded, but it couldn't locate my EVO LTE with the Lite version.

Thanks.