On a slightly positive note: It appears that the current software will handle an overlap between shows on the same (sub)channel. While experimenting a bit more with how the scheduler handles small overlap conflicts, I found that I did get duplicate content between back-to-back broadcasts of a show.
On a negative note: The scheduler completely botched the handling of a conflict between channels for a show that was only in conflict for the last, extended minute:
The conflict above would never have existed if the software could handle recording 8.1 and 8.4 off of one tuner’s output.