Brighthouse Networks just started getting them, but they have some audio/drop out bugs/issues. Keep in mind that although BHN uses the same guide/box models as TWC, they are a totally different company:
BHN has a forum where you can follow allong and learn about the progress of the 6-tuner DVR below. Would like to see something from TWC allong those lines, but to my knowledge they have not released the boxes yet. I could be wrong though. I am sure this thread will have updates:
Wow, they have been doing some serious development of their Roku channel. That is one nice channel and great to know I now have the VOD there. Some good kids stuff that is not on Netflix or Amazon prime (like CBeebies).
I found once I got a TiVo that my VOD viewing went right down, not because it was not possible but because the TiVo was recording the things I would have previously VoDed.