Since I haven't earned a doubles pin maybe I don't have a say, but in case I do, I'll say this: some of us like to have a pin to wear on a hat, vest, etc., but might like to have another "permanent" pin as a keepsake. Personally I often wear membership pins, but I also have a spot in the gun room where I keep other such pins and mementos, and were I fortunate enough to earn a doubles pin, I'd be more than happy to pay for an extra to make sure I have a lasting one here...
