I think my absolute only interest in this would be the ability to poll the locked/unlock status, and remotely and/or programatticaly lock the doors - and for that, I'm actually pretty interested, but it sounds like these are over-priced and really just impractical to put on all the exterior doors - not to mention, way too big.
Lose the keypad so it looks like a standard lock from outside the house, maybe just a hair bigger on the in-side - and make it not require their specific programmers and access points - and if it were reasonably priced, I'd be all over it.
As it stands now, if we're desperate to get in, we can always call in or use the iphone to open the garage door... or worst case, use the lock-box that's stashed outside - and disarm the alarm when we get inside.