Search results for SBU category documents

If Community Read is associated to an SBU document will a user get the document returned if they are not on the associated access list? Also, what results would someone running a report get if the document was SBU and the individual running the report is not on the access list? Would the metadata at least be displayed, or no returns for the SBU document? I know TechDoc does not display thumbnails when a document is SBU, but if that is not checked would a user get the search results for the metadata?