Quote Originally Posted by Crankin View Post
I only do spin classes when it's below 35 degrees out or raining.
I say this because it might be helpful to you to sort participants by those who only spin indoors or those who are road cyclists and use indoor cycling as an alternative when the weather is below their threshold for riding outdoors. I am quite sure you might find that cycling shorts usage falls directly along those lines.
Ditto - I too only do spinning in the winter. The only people I see in spinning class who wear cycling shorts are outdoor cyclists and only show up to spinning in the winter.

I am probably rare that I only wear athletic tights rather than my cycling shorts while spinning because the seats are bigger and more padded on the spin bikes and I find cycling shorts uncomfortable with them.