Rev match, blah, hahahahahahaha.
Ive never done that in any vehicles Ive owned unless the clutch cable was busted. Then Id start in gear and feel my way to the next gear.
For down shifting I just work the clutch and brake, dumping the clutch as the engine idles and watch it fly up to 3, 4, 5 grand as I work my way to a stop.
Clutches are designed to wear and be replaced, like brakes.