Time to go get the book and read upanybody remember james b. meek ? he wrote this here book. in this book he wrote, he showed how to create a scorper. remember ?? at least to our dear and beloved friend, this was an every day tool. how soon we all forget !
In wood, the only things I ever heard called scorpers worked kind of like hook knives, in that they were drawn in towards the body. They basically had little edged loops on their ends and could shave wood from practically perpendicular to the wood surface.
From all the responses, Scorp seems to be more of an action than any tool.