As far as I know the bulk of the developmental work with regard to multihulls' sails is carried out by the Italian loft.

F.Echavarry and M.Booth together with C.Ogletree are the team responsible to testsail the new Tornado cuts.

Likewise UllmanGZ has its own testers for the other main catamaran classes.

Subsequently these designs are made available to all the other Ullman lofts and "replicated" locally.

However I suppose that Charlie is working also on his his own ideas so that I cannot give you a definitive answer

See: http://www.ullmangz.it/ENG/NewsDettaglio.asp?ID=38