In case it helps any one else, i been learning how to make get_iplayer integrate with Emby.
The commands that worked for me were
get_iplayer --prefs-add --file-prefix="<nameshort><-senum><-episodeshort>" --output "D:\AutoOrganise"
"set preferences to put output into a location with filename that Emby auto organise can detect and move"
get_iplayer --pvr-add=The_Graham_Norton_Show "The Graham Norton Show" --output "D:\AutoOrganise" --file-prefix="<nameshort><-senum><-episodeshort>"
add a show to the get_iplayer pvr function (setting preferences twice is redundant/not required, unless you want different preferences for the pvr function)
schedule this command to run periodically,so as to suck down any episodes as they become available, Emby auto organise will do the rest. The filenaming options of get_iplayer are probably flexible enough to put the the file in the correct location on the filesystem itself (remove need for auto organise), but i havent worked that bit out yet.
hope it helps.
perhaps someone could write a plugin to control this all from Emby :-)