Today I riding with some buddies and one of them I noticed was rev matching to downshift. I understand what it and how to do it but I'm wondering if that's the correct way? my buddy was explaining it's much better to rev match than to pull in the clutch, down shift, then to let out the clutch fast like I have been doing. he said it's harder on the motor, shift forks, and could lock up the rear tire. I personally have not had these issues but I do notice sometimes when I shift fast like that in traffic the shifts sound extremely harsh. I always thought it was fine since I was under the impression the bikes had a slipper clutch and it's suppose to help with that .