The people I associate with are all long time motorcyclists, and the subject of loaning bikes very seldom comes up unless someone is interested in acquiring a similar one. I'd let any one of them ride the Kawasaki, but the Ducati's another story. It's way too easy to get in serious trouble with it, and I've got a lot of money invested in it. I can only think of two that I'd trust. One's an old riding partner who also owns Ducatis, and the other has been road racing for 40 years. Still has his old TD1C.
2015 BMW R9T, 2010 Ducati 1098 Streetfighter S
2009 Kaw 650 Versys, 1967 Triumph 650 TT Special