I didn't take the survey --I suspect I'm even older than tulip.

I've sewed 1-2 tops (non-cycling) with a slight pepulum.

For a cycling jacket, for myself, I wouldn't buy a jacket with a peplum because I just don't want air blowing up the back of me while cycling at a moderate clip. A cycling jacket is meant (to me) to be practical.

But yes, I would wear a peplum for fashion on a non-cycling jacket.

I think peplum's are an awkward garment cut because not all women would feel comfortable with a peplum, depending on whether or not they are happy with their body shape.