Old Style Pickle Fork

In researching the myriad of different types of pickles forks, I came upon the Old Style Pickle Fork. It is not found in all patterns. And, as I looked further, I found that often it looked very much like a salad fork or pastry fork. I did not take the time to go back and look into the different patterns to compare the pieces, however several times this piece was referred to as the "Old Style Pickle/ Pastry Fork" or "Old Style Pickle/Salad Fork".

This gave me enough pause to think that perhaps (as we have seen in prior cases) this is a piece with multiple names which can be confusing. My question is: with all the different types of Pickle Forks, why commandeer another piece in a pattern just to add another type?

Buttercup by Gorham ( 5 5/8 inches)