That's a fair point. Still, if the issue is that the enemy is about to jump away, it seems to me that you're dealing with less of a "How should I manage the rotation of shame?" issue, and more of a "What should I do with X GCDs remaining?" issue.

I would tend to think that, in the overwhelming majority of cases, one would want to run Alt RoS since the PPS difference is so negligible and it's "safer," barring a phase jump.