yes, have been through all of Arne's stuff.
Strangely, I've only ever read about problems with the Hasler-Macleod design. No windward performance when more than a few panels are reefed, it all weather vanes behind the mast. There's a chap I'm in contact with cruising the Atlantic now who also has that complaint. I'm sticking with Reddish and closely following the junks shown in Hong Kong photos on that website you posted.
My Badger hull is mostly planked. Its looking pretty spiffy at the moment.