I am still wearing mine! In fact, I think after my last wearing of my ancient F21 one, I might be looking for a replacement for that one.
As an aside, I always thought the term "sleeveless blazer" was a bit silly. Why don't retailers just call it a vest? (Although I had a discussion about the term with J. the other day, and he says that in menswear a vest or waistcoat is specifically the thing you wear UNDER your jacket (like in a 3 piece suit), so this type of garment, with a collar and lapels, would not qualify).
PS - Has anyone seen one lately with strong shoulders? The one I want to replace has a frill-type thing on the shoulders, which is a little OTT for me now, but I would like something with a strong shoulder.