When I upshift, I always cycle through all gears regardless, and the only reason why is because I want to be in the best gear to be gas efficient yet still have the powerband to move my ass out of the way in case something happens in front of me. I only rev match when I downshift. Sometimes I do the unnecessary double clutch heel-and-toe when, let's say, I go from 6th to 4th gear, or basically anytime I jump two gears down. Of course this entirely depends on what kinda car you drive and what type of clutch it has installed. A lot of cars are more forgiving than say the STI that I drive.