Well, this morning I did as Caro suggested... although I didn't wait until the end of the day. I wanted to wear my red suede peep-toe wedges, and gave them a good look before putting them on. They've gotten a little scratch. So out they've gone.
But I don't know how long they'll count as a purge, because I wanted to wear them. They were an easy finish to a lot of my outfits I feel. The moment I find something similar, red peep-toe wedges will back in the ol' closet.