Hello,
We've sort of stopped using System Mangler as the launch page for our cDOT systems. Essentially we have a dashboard (or just short cuts) made up of our various 8.3+ cDOT systems that point directly to the host name vs. the IP address. Then your certs will be acknowledged by the browser and avoid the SSL errors accompanied by hitting the IP.
Not technically the solution to your question, but it's working out fairly well for our operation...and you're not having to maintain another piece of software on your management workstation.
Cheers,
Chris