Oh yeah, I do this myself. I have the heartbeat alert fire off every 2 hours which may be overkill but that's how I roll. :)
If you think it through, it's actually pretty simple:
1) Have Orion monitor itself
2) Set alert to trigger if the node status is up. If you have APM, you can take this further by monitoring all Orion services and trigger if they're up.
3) For your trigger action, set the alert escalation to your preferred frequency
A simple but effective heartbeat alert
Awesome idea thanks for the tip!