If it takes off, you could do a free 5 minute intro feed + a paid 1 hr detailed feed (which might be enough to satisfy the HN craving while commuting/doing chores/etc.).

I'd recommend trying out assigning numbers to the stories (eg. 1 of 10) as they are introduced to give more separation between stories / comments. Or maybe one voice does the story summary and the other the comments. Without paying close attention it seems to all blend together.