Personally I like the inconspicuous little lapel pin. I like the fact that it's impossible to wear something like that at a social gathering without it inviting comment or query.
Was this a pun? I have looked for a smaller version of the lapel pin, to no avail.
I do wear a 1.75" lapel pin at all times. And you are right, it does, indeed, invite comment and query almost literally everywhere I go.
Some people "know" a bit about it. Others like to tell what they "know." Which, as you can safely assume, is very little.