Called my LHS - Hobbytown USA (everything RC and electric plus a D&D type section) asked if they had any reverse pitch spinners. Guy said he never heard of such a thing. He had spinners but not reverse pitched. Sounded like I asked for something not yet invented.  I then explained about electric planes and you can program the controller for reverse pitch props.
"Oh yea we have 2 or 3 reverse pitch props" he says. I tell him that I see them on the main Hobbytown web site.  Then I get "we can order them". 

My LHS is about a 1/4 of tank a gas from my house.
Oh well I need bullet connectors anyway and he said he had those.