Agreed. If it is a professional job, you have no way of knowing whether it was done "officially" (i.e. arsenal) or privately. And it might just turn out one day to be something very special. And if you could find a set of original grips in good condition (snowball, chances, and hell are words that spring to mind) and fit them, you have not created an original, just imitated one. As you say yourself
"something that requires more research"