I wear kilts as I please, without regard for past or present restrictions. That includes sporrans and any accessories I choose to add.
I prefer two matching kilt pins, one on either side of the apron. Today I wore a past and present Vancouver Canucks logo. Some days I wear silver dollars.
I wear day sporrans all the time. I didn't dress up or wear what others thought I should wear when I wore pants. I don't see why I should because I now wear kilts.