Here's a quick question. If my summoner and eidolon both have the Share Healing feat (as we both need it for it to work) and I cure it with a rejuvenate eidolon spell, can I also heal myself in the process? The description isn't quite clear on that note...
Rejuvenate Eidolon is a conjuration (healing) spell, and Share Healing talks about healing spells, so it works perfectly between you two, even if you could normally not be a target of the spell.
The hard part, however, is getting Share Healing on the eidolon, as they do not meet the prerequisites due to an oversight. Right now, only the Hunter can share the teamwork feat with their companion.