HD HomeRun SCRIBE on AppleTV/Channels?

I have the new Scribe Duo with built in DVR/hard drive. I want to watch & record OTA TV on my TV, not an iOS device.

Will channels give me TV and will it utilize Scribe's built in DVR?

Channels will not use the DVR part (hard drive) of the Scribe Duo. Only HDHR software will do that.
Channels can use the tuners.
In order to record from the Scribe Duo with Channels, you need to subscribe to Channels DVR (now called Channels Plus) and install it on a Mac/PC/NAS/etc, where the recordings will be kept.
If you subscribe to Channels DVR (now called Channels Plus), you can download the Channels DVR Apple TV app for no cost.