DR Ginny, are the stockings you're being fitted for Jobst stockings? Jobst was one of our customers long ago. I didn't work on that project, but my friend Mal did. He knows more than you'd ever want to know about compression stockings.
I wear leggings a lot for compression. I prefer cotton to synthetics and some of the higher-end leggings are designed to give compression. They're probably not as beneficial as Jobst, but you can toss them in the washer and dryer. I used to wear them under my jeans, but it's too warm here for that.