It appears that in ArcGIS Pro 1.0 you do not have to create a local copy for editing to make edits to a feature service as in ArcGIS 10.3 and prior. I have noticed that on feature classes in a feature service that utilize subtypes, the subtype field shows the code, not description, as does one of the domains that changes depending on the subtype selected. Also, the field names are displaying, not the field aliases.
See elem_type and elem_name fields in attachment. Other fields that use domains, such as elem_found, elem_eo, and new_up do show the domain description instead of the coded value.