So SkyDrive Pro is just the MySite of SharePoint 2013 / SharePoint Online.
The Mac Office 2011 client has a connector that doesn't necessarily cache locally but does allow for a Finder view of the files within your document library.
While it's not a full solution in place of SkyDrive Pro client that is a part of the Office 2013 / Office 365 ProPlus suite (though also available as a separate download for Windows) the Document Connector solution for Mac Office 2011 (comes installed when you install Office 2011) works pretty well.