grannysyb the "rub" test reveals the Martindale rating which is only relevant for woven fabrics.
Non-woven materials are assessed in "flexes" so instead of rubbing a worsted fabric against the sample fabric, the sample leather (or whatever fabric it is) is pulled back and forth to assess suppleness and checked for surface cracking.
However, if you have a design with sharpish corners (especially on arms) even a really heavy duty fabric can fail quickly, likewise readily accessible piped areas (eg. front piping on seat cushions).
My poly/viscose velvet (chosen as had a high Martindale count and more durable than other fabrics we liked) is looking shabby on yjr ends of the chair arms. The seat cushions are OK as though piped they have been turned regularly.
If I was choosing a new fabric to recover now I would only look at fairly heavy commercial fabrics.
Sad but true. 😕