Bob, A while back I did a quick and dirty 20M class "E" RF deck using the TPH3206PS GaNs, their fastest ones, just as a proof of concept experiment. They worked quite well up there running cool. Dont know if they would do 10M though in switch mode, that's a tall order.
Thread here:
http://amfone.net/Amforum/index.php?topic=42262.073s Nigel