If you still need localized hits (headshots and such), there is another trick you can use.
You can add primitive collision shapes to the Character (or Pawn) that is using Animation Sharing, as child of the Skeleton Mesh, and attach them using Sockets to any bone.
You are adding extra collision shapes into the simulation. If you can:
- Set the collision type to “Query Only”
- Set the collision Responses only for the channels in which damage will be coming from
This is an example how I setup the Collision Response, take it as guidelines, not as a must
The result is a Character with Animation Sharing, and some Hurtboxes that follow the bones 
