I have searched high and low, internally and our external sources (TechNet, MSDN), for any SharePoint specific information in regards to Branch Cache. There is a good white paper here; http://technet.microsoft.com/en-us/library/ff468721(WS.10).aspx on setting up a lab to test Branch Cache. The lab in this white paper is a good start on how to setup a lab where you can test the functionality of Branch Cache for SharePoint as it has steps on configuring IIS 7.5 for Branch Cache, which would be the same as setting up SharePoint for Branch Cache.
NETSH branchcache flush
