Actually it does.
I use it when I want to archive something or fix glitches in something I want to watch.
I was surprised to see the "scene marks" (red vertical lines) delineating the PIP commerical in VRD.
I just marked them to cut that portion and watched the show, skipping that part that was all PIP commercial (except for some text on the left side that explained about trees, deer, etc.) Not really part of the show.
Edited to say this isn't part of Channels DVR, except for it producing an edl file as part of its EDL hack and a VRD Project output file by my hacking the comskip.ini file to use VRD to view this. VRD is a Windows only program that I use for video editing things I will archive, or to clean up glitches in transport stream files recorded by various DVR's, like an HDHomeRum or TiVo.
Right now I'm recording random things to test comskip and transcoding on my new nas.
Just tried to edit the blocks on this recording using Channels DVR Web UI and it did allow me to select that PIP block that was marked as a show segment and make it a commercial segment.