Following a link elsewhere on FA, I came across this apparently "Revolution Beater" competetion-freestyle-trickable framed 4 line kite...
http://www.kites4u.eu/contents/en-uk/d76.html#p796
Check the list at the bottom, I didn't realise rev types could do so many 2 line freestyle tricks, or are they talking dross?
Jay.
ps: friend's after a revolution type kite, hence me looking