Quote Originally Posted by Lyrica_Ashtine View Post
With the above, depending on the scholar and encounter, Eos might be used instead. As result you'll have no buff up at all from the Scholar.

Unless all conditions mentioned above are met (2 scholars, perfect fairy coordination, no pet derping and they don't use the skill speed buff at all), I believe it's wrong to use the higher value.
Just to be nitpicky, while I agree with the rest of your post, I feel the bolded isn't something that should even be considered. In my opinion, theorycrafting BiS gear/optimal rotations has always been targeted towards the top % of players who are most likely to reach, or get close to, that level of gear/optimized play. Players who care that much about their progress are likely to surround themselves with people with a similar mindset. A Scholar who cares about being as optimal as possible will never use Eos over Selene.