I was recently on the Epic and they appear to have gone 100% DMR. They are using HYT radios, but I didn't get the model numbers. Here are the frequencies that I found. Unfortunately I did not have a DMR-capable scanner so I was unable to tell what the individual frequency usage was.
457.5250
457.5375
457.5500
457.5625
468.0875
468.3125
457.5250
457.5375
457.5500
457.5625
468.0875
468.3125