Karl:
Does anyone know if the duchess was spin tested?
I didn't see him saying the instructor said you could.
I didn't see him saying he would.
I didn't see him recommending anyone else to.
He didn't say he didn't understand the POH.
The reason people are reacting negatively to this idle question about the spin capabilities of a Duchess is that it indicates an unhealthy attitude to the manufacturers instructions.
Two personal experiences started out in a similar manner:
"Did you know you can stub out a lighted cigarette in a can of petrol and nothing will happen?"
"Did you know that a hand grenade is great for fishing?"
Save questions like that for "Mythbusters", Hooligan.