Many years ago I knew a chap who had fled Hungary after the failure of the 1956 Uprising. The main thing he objected to about communism wasn't the ideology, it was that he couldn't get replacement razor blades.
He told me the best way to keep blades sharp was to stroke the edge the wrong way across a glass sheet a few times. This had to be done after every shave without fail. I was a smooth cheeked boy at the time. Although I'm sure it was good advice, I've never tried it.
I thought that razor blades had to be put under a pyramid if you wanted them sharpened. Using my jeans as a strop sounds like a surefire way of inflicting some personal injury.
As the wolf in Little Red Riding Hood would say 'All the more to cut youself with'. I suppose you could use it as a super microtome to section pimples and bumps or a mandolin for super fine vegetables.
45 yrs ago I bought a cut throat razor from our local tool merchants [kayes tools newport rd middlesbrough] a fantastic traditional engineers supply shop that served the local shipyards & engineers on teesside alas now gone, it was £3, 10 shillings, I've used it ever since, allthough I have a beard I still have to shave all round it!! I strop it each time & every 3-4 months a few strokes on an arkansas stone & off we go.
Not quite a razor but I used to use surgical scalpels continuously in my work. When they got dull I used to strop them on the cardboard that I was cutting. It made a huge improvement in their sharpness but it only worked a couple of times before I had to replace the blade.