Is SLIM Companion Explorer suitable for use across constrained network links?

Yes, Explorer is optimized for use on constrained networks. For example, browsing through the SharePoint folder structure using Explorer typically consumes 10 kB versus 130 kB for the standard SharePoint browser view request. The tool also uses caching techniques to improve the user experience. The use of chunked uploads allows uploading of very large files without exceeding time-outs on infrastructure components.